Experienced and professional animal trainer provide their insights in answering this question :
A. Peeling of the tongue may indicate that your dog had an allergy or burn on the tongue and it is now attempting to heal itself. If the tongue is actively peeling and bothersome to your dog, or if it is actively bleeding or your dog is unable to eat/breathe it is best to schedule a veterinary appointment ASAP to check for the cause of the issue. If you are seeing any other signs of illness in addition to the peeling tongue, alert your vet.

How to Identify Common Pet Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced pet care professionals :

Symptoms of Glossitis in Dogs

You may notice the tongue tends to crack in longitudinal lines. These are referred to as fissures. Fissures may allow the accumulation of bacteria and foreign bodies to proliferate.

A dark red, purple, or blue-tinged tongue could be a sign of heatstroke, toxin exposure, heart/lung disease, or electrical shock. A pale pink-to-white tongue could be a sign of severe anemia due to immune mediated disease, or internal bleeding.
Burr tongue is most commonly seen in long-haired dogs when they accidentally traumatize their tongue and mouth on the burrs during grooming. The hooked scales of the burrs become embedded in the tongue and gums and cause an intense foreign body reaction.
Macroglossia is a very rare condition in dogs. This is often characterized by an abnormally large tongue that may have reduced range of motion and cause breathing difficulties.
Sometimes, the color of a dog`s gums and tongue can be a telltale sign of a dehydrated dog as well. If the gums and tongue are pale, it can be a sign that your dog needs some much-needed water. If the gums and tongue are pink, the dog is okay, but if they are dark red-pink, it can also be due to dehydration.
What causes black spots on a dog`s tongue? Black spots are simply pigmentation. Just like certain breeds have darker “points” or spots, spots on a dog`s tongue are merely pigmented skin cells. Points, in terms of dog coloring, refer to the lips, nose, eye rims, paw pads, and toenails of a dog.
Healthy dog tongues are usually pink, with the exception of breeds with black- or blue-spotted tongues. Even in a pink-tongued dog, black-pigmented areas on the tongue or gums are common. Lesions, blisters, or broken skin on the tongue or mouth should be evaluated by a veterinarian.
Glossitis is a problem in which the tongue is swollen and inflamed. This often makes the surface of the tongue appear smooth. Geographic tongue is a type of glossitis. The tongue is mainly composed of muscles. It is covered with a mucous membrane.
Stomatitis is a more severe form of inflammation than gingivitis and usually involves more tissues than the gingiva including the tongue, lips, and other soft tissues in and around the mouth. Stomatitis is often very painful causing a decreased appetite due to the pain.
Dysphagia in Dogs. Dysphagia, the medical term given to difficulty swallowing, can occur anatomically as oral dysphagia (in the mouth), pharyngeal dysphagia (in the pharynx itself), or cricopharyngeal dysphagia (at the far end of the pharynx entering the esophagus).
Hanging tongue syndrome is a medical defect that can arise in dogs due to a variety of reasons, and which can indicate a problem with your dog`s conformation or neurological system, or that they have suffered from an injury, all of which can go on to cause further problems.
Glossitis, an acute or chronic inflammation of the tongue, may be due to infectious (calicivirus, herpesvirus, rhinotracheitis virus, leptospirosis), physical (irritation from excess calculus and periodontal disease, foreign bodies that penetrate or become lodged under the tongue, traumatic wounds), or chemical agents; …
What are the clinical signs of pancreatitis? The most common clinical signs include nausea, vomiting, fever, lethargy, abdominal pain, diarrhea, and decreased appetite. During an attack, dogs may take a `praying position`, with their rear end up in the air and their front legs and head lowered onto the floor.
The normal color of a healthy tongue should be a deep pink. When hot, the tongue will normally be red due to the heat that is being released from the vessels, so the best time to look at your dog`s tongue is when he`s at rest. The younger the animal, the pinker the color, due to his vitality.
Depending on the size, type and location of your dog`s tumor, as well as the cancer`s propensity to spread, oral cancer tumors in dogs can be darker in color than the surrounding tissue (pigmented) or non-pigmented, they could also appear as smooth lumps or be more cauliflower-like in appearance.
Malignant lymphoma is a common cancer in dogs. It is a progressive, deadly disease caused by the harmful growth of lymphocytes. Lymphoma most commonly arises from lymphoid tissues in the bone marrow, thymus, lymph nodes, or spleen. Other common sites include the skin, eye, central nervous system, and bone.
It is common for dogs with lymphoma to have lymph nodes 3-to-10 times their normal size. These swellings are not painful and feel like a firm, rubbery lump that moves freely beneath the skin. Dogs with multicentric lymphoma may also develop lethargy, fever, anorexia, weakness, and dehydration as the disease progresses.
The most common is polyuria and polydipsia due to loss of concentrating ability. Gastrointestinal complications (inapetence, anorexia, vomiting, diarrhea, weight loss) are very common, and they are usually the first signs that prompt owners to visit a veterinarian.
Dogs can bleed to death within a few hours if the bleeding continues unchecked. They can be quite literally felled in their tracks. The bleeding is internal, and there is no evidence of bleeding that can be seen externally by the pet owner.
Pets in the tongue tend to heal quite quickly, and don`t often need sutures. If the wound is not bleeding, it may heal on its own, and what you can do is Monitor it for any signs of infection or ongoing bleeding. She may need to be fed soft food for a couple of weeks while it heals, but these wounds are often fine.
Dogs to lick to groom themselves, however, they`re not as effective as cats at this task. This is because unlike a cat`s rough, sandpapery tongue, a dog`s tongue is smooth. This is why regular dog grooming is so important.
Vitamin deficiencies

In rare cases, malnutrition can cause cracked tongue. A different study from 2016 found a link between cracked tongue and vitamin B12 deficiency. Meanwhile, research from 2015 indicates that pain associated with cracked tongue may stem from deficiencies in: B vitamins.

Osteomyelitis of the jaw is the inflammation of the jawbone (mandible or maxilla). This type of inflammation is most often caused by bacterial or fungal infection. It can also be caused by injury (bite or puncture wound), dental disease or infection, and decreased blood flow to the area.
Trenchmouth(Necrotizing Ulcerative Gingivitis)

This relatively uncommon disease of dogs is characterized by severe inflammation of the gums (gingivitis), ulceration, and death of the tissue lining the mouth.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Q. Whenever I take my dog on walks he always barks at people and others dogs in my neighborhood. What should I do to resolve the problem
ANSWER : A. The very first thing to do is to make sure your dog is getting sufficient physical and mental exercise every day. A tired dog is a good, happy dog and one who is less likely to bark from boredom or frustration. Depending on his breed, age, and health, your dog may require several long walks as well as a good game of chasing the ball and playing with some interactive toys.

Figure out what he gets out of barking and remove it. Don’t give your dog the opportunity to continue the barking behavior.

Ignore your dog’s barking for as long as it takes him to stop. That means don’t give him attention at all while he’s barking. Your attention only rewards him for being noisy. Don’t talk to, don’t touch, or even look at him. When he finally quiets, even to take a breath, reward him with a treat. To be successful with this method, you must wait as long as it takes for him to stop barking. Yelling at him is the equivalent of barking with him.

Get your dog accustomed to whatever causes him to bark. Start with whatever makes him bark at a distance. It must be far enough away that he doesn’t bark when he sees it. Feed him lots of good treats. Move the stimulus a little closer (perhaps as little as a few inches or a few feet to start) and feed treats. If the stimulus moves out of sight, stop giving your dog treats. You want your dog to learn that the appearance of the stimulus leads to good things.

Teach your dog the ‘quiet’ command. Oddly, the first step is to teach your dog to bark on command. Give your dog the command to “speak,” wait for him to bark two or three times, and then stick a tasty treat in front of his nose. When he stops barking to sniff the treat, praise him and give him the treat. Repeat until he starts barking as soon as you say “speak.” Once your dog can reliably bark on command, teach him the “quiet” command. In a calm environment with no distractions, tell him to “speak.” When he starts barking, say “quiet” and stick a treat in front of his nose. Praise him for being quiet and give him the treat.

As in all training, always end training on a good note, even if it is just for obeying something very simple, like the ‘sit’ command. If you dog regresses in training, go back to the last thing he did successfully and reinforce that before moving on again. Keep sessions short, 15-20 minutes max, and do this several times a day.

Q. Rescued a dog almost two weeks ago, and now that her kennel cough is gone her personality shines!! No previous training, how should I start?
ANSWER : A. POST FOUR:

After your dog is familiar with the behavior you lured from scratch, and taught to your dog, you can start to use the “no-reward marker” I talked about. What you do is ask the dog to perform the behavior, and if the dog does not perform the behavior, you simply say your no-reward marker (choose one: eh-eh, hey, uh-oh, oops) show them the treat, put it behind your back, and BRIEFLY ignore your dog. Just turn your back for a second or two, before turning back to your dog and saying, “let’s try that again.” When you’re ready to start over with your dog, make sure you move around. If you are repeating the same cue while in the same position, while your dog is in the same position, you are likely to receive the same results. The more you move around, and start fresh, the better your chances are of having your dog listen to your cue the second time around. BIG rewards when they dog it successfully! Lots of praise and treats.

My no-reward marker is “hey.” When my dog does something wrong I say, “hey” and she immediately understands that she needs to offer a different behavior. This is clear to her. I don’t have to say it in a mean way, I simply say, “hey” in a normal tone of voice and she understands what the word means.

Once you’ve built up that connection and communication with your new dog, you can work on all kinds of fun behaviors! I personally enjoy the more zen-like behaviors: https://www.youtube.com/watch?v=ruy9UMcuGh8

I like to teach my dog fun tricks that offer her a “job” to do of sorts like object retrieval: https://www.youtube.com/watch?v=I4iertZSva8

(object retrieval training completed; what it looks like: https://www.youtube.com/watch?v=jx0Dml28FGY)

Scent-games are fun too! Very confidence building. Hide a REALLY smelly treat in a box, and place that box in a line of boxes. Let your dog go in the room while saying something like “search!” or “find it!” and watch them hunt for that smelly treat! Lots of rewards when they find it!

Q. What can I do to stop my dog from barking at people and front doors?
ANSWER : A. Ignore your dog’s barking for as long as it takes him to stop. This means don’t give him any attention at all while he’s barking. Your attention only rewards him for being noisy. Don’t talk to him, don’t touch him, and don’t even look at him. When he finally quiets down, even to take a breath, reward him with a treat. To be successful with this method, you must wait as long as it takes for him to stop barking. If he barks for an hour and you finally get so frustrated that you yell at him to be quiet, the next time he’ll probably bark for an hour and a half. Dogs learns that if they bark long enough you’ll give them attention.

Teach your dog the ‘quiet’ command. It may sound nonsensical, but the first step is to teach your dog to bark on command. Give your dog the command to “speak,” wait for him to bark two or three times, and then stick a tasty treat in front of his nose. When he stops barking to sniff the treat, praise him and give him the treat. Repeat until he starts barking as soon as you say “speak.” Once your dog can reliably bark on command, teach him the “quiet” command. In a calm environment with no distractions, tell him to “speak.” When he starts barking, say “quiet” and stick a treat in front of his nose. Praise him for being quiet and give him the treat.

When your dog starts barking, ask him to do something that’s incompatible with barking. Teach your dog to react to barking stimuli with something that inhibits him from barking, such as lying down in his bed.

Make sure your dog is getting sufficient physical and mental exercise every day. A tired dog is a good dog and one who is less likely to bark from boredom or frustration. Depending on his breed, age, and health, your dog may require several long walks as well as a good game of fetch and playing with interactive toys.

Q. My dogs tongue looks like its peeling. A couple long stripes .
ANSWER : A. Peeling of the tongue may indicate that your dog had an allergy or burn on the tongue and it is now attempting to heal itself. If the tongue is actively peeling and bothersome to your dog, or if it is actively bleeding or your dog is unable to eat/breathe it is best to schedule a veterinary appointment ASAP to check for the cause of the issue. If you are seeing any other signs of illness in addition to the peeling tongue, alert your vet.

Q. My Beagle listens to me, but cries & whines when I’m gone & doesn’t listen to my parents. I adopted him just a couple days ago. Any tips for my folks?
ANSWER : A. I really highly doubt that your Beagle listens to you and has formed a connection with you in just a couple of days. It takes months to build up any kind of serious connection with your dog. You need to work on communication with your dog through training them to understand different cues. For instance the Leave-It cue: https://www.youtube.com/watch?v=R1TS5nA7z5Q

You have to work on bonding with your dog through mental stimulation. Training is very important. Luring each new behavior from scratch, and training using treats is how you form a strong bond with your new dog. No scolding is ever necessary… work on being calm, and positive, all the time.

If your dog is crying/whining when you leave, this may be separation anxiety. You’re going to have to separation train this dog from scratch. This dog needs to learn that separation can be a good thing! Tell your “folks” to NOT scold the dog when he is crying/whining after you leave, because that will make your dog MORE anxious when you leave next time. Your dog will be dwelling on the negative if your parents fuel your dogs negative feelings towards you leaving. FUN things should happen when you leave. Your parents should pull out the treats and start doing some basic obedience training with your dog. Your parents should stuff a Kong filled with awesome treats (peanut butter) and give it to him so he feels happy when you leave.

I have some excellent separation anxiety exercises you can work on. If you’d like, you can purchase a consultation with me, and I will go over how to separation train from scratch. It will make your dog comfortable being alone, guaranteed.

Read Full Q/A … : I Don't Like My Mother

Q. How do I determine how much my overweight pet should weigh?
ANSWER : A. There are many tools to determine overweight and obesity levels in pets. A new tool, morphometric measurements and body fat index, are available to accurately determine a pet’s ideal weight; this will allow an accurate determination of the amount of food a pet should receive to achieve weight loss. Feeding the correct amount will lead to greater weight loss success.

There are many weight loss food options to help pets reach their ideal weight. Your veterinarian can help make a ideal weight recommendation. Here are some tips to help your dog lose weight in a healthy and safe way:

1. Diet: Providing a healthy and well balanced diet is essential to your pet’s overall health. Finding the right food for your dog can be a challenging process. For those overweight animals many commercial dog companies offer weight loss diets, but it is important to evaluate food labels for adequate nutritional content.

You want to ensure you are not missing other essential vitamin or mineral content. Volume of food is also important and the amount of food that works for one breed of dog may not be the same for another breed of dog. Portion control as opposed to free-choice feeding can help your dog to drop a few unnecessary pounds.

There are also prescription weight loss foods designed by veterinary nutritionists, such as Hill’s r/d (http://bit.ly/1AoENSd). Some pet owners find that home cooking is the best option for helping to provide a well-balanced and realistic diet plan. There are websites such as balanceit.com that offers recipes to fit your dog’s specific needs. Consulting with your veterinarian or a veterinary nutritionist to find the appropriate diet is a great way to help your dog be as healthy as possible.

2. Exercise: Another great tactic for weight loss for your dog is exercise. Whether this is through running, walking or playing with a favorite toy all of these are wonderful types of exercise to help keep your dog at a lean and healthy weight.

For those pet owners with busy schedules utilizing professional dog walking services or playtime through dog daycare services is another option. It has been shown that those pet owners that exercise regularly with their pets generally live a healthier lifestyle.

3. Physical therapy: As animals age pet owners offer encounter their favorite canine having more difficulty walking and have a dwindling desire to play with toys. Physical therapy, specifically hydrotherapy is a wonderful way to help older and arthritic animals gain more mobility and lose weight. Hydrotherapy has been proven to have several therapeutic effects on the body including, muscle strengthening, relief of swelling, decreased joint pain, less stiffness in limbs, improved circulation, weight loss, and increased tissue healing to name a few. For more information on the benefits of hydrotherapy:
http://bit.ly/1w1qqoy

4. Veterinary visit and blood work: Weight gain can also be related to underlying health concerns such as hypothyroidism or other endocrine disorders. Scheduling a veterinary evaluation and routine blood work can be another important component in increasing the longevity of your dog’s life. Conditions such as hypothyroidism that predispose dogs to gain weight can be treated with a daily medication to improve hormonal balance. If feel that your dog is unnecessarily overweight there can be an underlying health condition that needs to be addressed.

5. Healthy treats: Pet owners love the chance to reward their favorite canine companion with treats and most dogs jump at the chance to consume these delicious products. The problem is many treats, which can include commercial dog treats or table scrapes can add many unnecessary calories to your dog’s daily intake. Reading labels and making note of the calories in these treats is an important component of understanding your dog’s overall health. Treats should not exceed more than 10 percent of your pet’s daily calories. There are healthier treats that can be offered to your pet to keep calories lower yet provide a fuller sensation. A pet owner can add steamed or pureed vegetables, such as carrots, green beans or sweet potato to add more fiber and thus a fuller feeling for your dog.

Q. How do I desensitize my dog to squirrels and stray cats in the neighborhood?
ANSWER : A. It depends on the goal that you have in mind. I am going to assume that you would prefer that your dog not chase squirrels or stray cats in the yard/street. In this case, your options include: (1) training your dog on a “Leave it ” cue using positive reinforcement methods, (2) training your dog not to pull on its leash when it sees a squirrel/stray cat, and (3) training your dog to perform a more desirable behavior when it sees a squirrel/cat.
Training your dog on a cued “leave it” command is useful because it will give you the ability to tell your dog to stay away from any number of undesirable objects on your command. Training your dog to perform a more desireable behavior when it sees a squirrel or cat will substitute a behavior you find acceptable (sitting, laying down, coming to the door, etc.) with a behavior you dislike. Your dog can still react, just in a positive way. If your dog pulls on the leash every time you see a squirrel/cat, training not to pull will make your walk safer and more pleasant.
The ideal training method to use with dogs, or any animal for that matter, is positive reinforcement training, particularly a method called “clicker- training.” The basic concept of positive reinforcement training is to pair a reward (reinforcement) with a behavior you want to increase in frequency. In other words, when your dog performs the behavior you desire, it receives an award, which reinforces the desired behavior so you get more of that behavior. There are many excellent books in stores or on-line that describe positive reinforcement training in detail and many give step-by-step instructions for training common commands like “leave it”. Look for books that specifically mention positive reinforcement training or clicker-training. You can also take dog training classes to learn the techniques, find a mentor who already uses clicker-training, or request a consult from one of the pet experts on this site to guide you.

Q. My Bulldog puppy growls, barks and even tries to bite me when I say “no” to him. What can I do?
ANSWER : A. First, avoid scolding him and acting aggressively towards him if you don’t want him to be acting aggressively towards you. There are other methods you can use to communicate to your dog that you don’t want him to continue doing what he is doing. I recommend you stop telling him “no”, scolding him, or raising your voice at him. Everything coming from you should be 100% positive and 100% calm.

Try to figure out ways to clearly communicate what you want to your dog. If you want your dog to leave something or someone alone, I strongly suggest teaching your dog commands like “leave it”. Here is a link to a video in which I explain how to do it:

www.youtube.com/watch?v=R1TS5nA7z5Q

Another thing I suggest you use is a no-reward marker. This clearly communicates when your dog has done something wrong. No-reward markers have to be introduced during your training sessions. You should be doing at least three training sessions per day, that are something like 3-10 minutes long (working on different things each training session). If you are teaching your dog something BRAND NEW, do not use the no-reward marker, as you do not want to discourage your dog from performing behaviors for you. Use the no-reward marker for known behaviors only. Here is another helpful video about this:

www.youtube.com/watch?v=sdU5a6fXKlg

Lure each new behavior (as shown in the video) using high value treats. Let’s say you’re working on “down” which is a behavior your dog knows fairly well. Present the treat to your dog. Ask your dog to “down” (only ask once). If he does not go “down” immediately, say, “uh-oh” or “eh-eh” in a gentle tone, and then place the treat behind your back. This communicates to your dog that they did something to make the treat go away.

After you place the treat behind your back to show your pup “that was wrong” you need to communicate to your pup “let’s try again” by getting your pup to walk around for a second, and then start the behavior all over again. If your puppy is very young, chances are you haven’t taught him a solid “down” behavior yet. So, as I said, do not use this method until you have lured each new behavior as shown in the video.

This is the order in which you should teach behaviors: Lure using a high value treat as shown in the video. After a few successful food lures, lure with an empty hand. If the pup is successful with the empty hand lure, reward with lots of treats. If the pup is unsuccessful, then go back to food-luring a couple more times. After a few successful empty-hand lures, you can begin to add the cue. Say “sit”, then lure with an empty hand, and then reward. Once your pup understands the cue, begin to work on the no-reward marker.