Experienced and professional animal trainer provide their insights in answering this question :
A. It sounds as though he has a nasty ear infection. This is extremely painful. I would recommend taking him to your vet as soon as they open.

How to Identify Common Pet Problems ?

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

Some of the main causes include: ear infection, allergy, insect bites, build up, ear mites and ear hematoma. It is important to keep a close eye on it and contact your veterinarian right away so that your pet can get the proper treatment.
Soreness. Once an ear infection is established, your dog`s ear is likely to be uncomfortable. They may try to avoid you touching their ears and become a little head-shy. In extreme cases, your dog may show signs of aggression if you try to examine their ears.
There aren`t any home treatment options for ear hematomas in dogs because they`re usually due to an ear infection, which requires a vet visit, Dr. McCullough says. You should never take matters into your own hands — ever. “Pet parents should not try to release the trapped fluid themselves,” she says.
Left untreated ear infections in dogs can develop quickly and result in symptoms such as balance and coordination issues, pain and in severe cases facial paralysis.
Although an ear infection is not a veterinary emergency, it does require medical treatment to resolve and can be painful for your pet. Ear infections commonly lead to inflammation of the outer ear, a condition called otitis externa.
A negative reaction to being touched is usually a classically conditioned response. With classical conditioning, the environment acts on the dog. That is, the dog`s brain contains a pre-programmed message that says, “Touch is BAD!” – and when the dog feels your touch he reacts, without stopping to think.
Pain: Dogs with undiagnosed pain or injuries are likely to be wary of touch. Older dogs dealing with joint issues, athletic dogs coping with strains or sprains, and even puppies going through a growth spurt might avoid petting because it aggravates the pain.
Outlook. Your dog should recover within one-two weeks if their ear heals without complications. However, their exact recovery time will vary depending on what caused their aural haematoma to develop in the first place.
Oil of oregano is a natural antibiotic. To use if for your dog`s ear infections, add one drop to ½ oz of warm pure aloe vera juice. Clean the visible parts of the ear with a cotton ball soaked in the mixture. Apple cider vinegar can help reduce the itch and discomfort of an ear infection.
A healthy eardrum looks pinkish-gray. An infection of the middle ear, or an ear with otitis media, looks red, bulging, and there may be clear, yellow, or even greenish hued drainage.
Never put olive oil, vinegar, shampoo, or any other substance in a dog`s ear. Also, avoid poking around with cotton buds in the ear, you will only work any wax and debris further in and potentially damage the eardrum.
A dog`s ears are extremely vulnerable to infection, and vaseline may seal in bacteria and yeast, making problems worse. In short, never put anything into your dog`s ears that is not explicitly made for dogs, such as dog ear-cleaning wipes.
Ear infections can be quite painful for your pet, so you`ll most likely notice signs of discomfort. Some more specific signs that are typical of pets battling an ear infection include: Crusting or scabs in the ear. Dark discharge.
A very rare and serious complication of a middle ear infection is meningitis. This can occur if the infection spreads to the protective outer layer of the brain and spinal cord (the meninges). Symptoms of meningitis can include: severe headache.
Areas to Avoid

The genitals and anus are obvious areas to stay away from; dogs are protective of these areas just like humans. In general, other areas to avoid petting include the face, tail, feet, and legs. Hugging a dog should also be avoided unless you are certain the dog likes it.

The ears often become red and inflamed and develop an offensive odor. A black or yellowish discharge commonly occurs. In chronic cases, the ears may appear crusty or thickened, and the ear canals often become narrowed (stenotic) due to chronic inflammation.
Many dog owners have learned to recognize the telltale signs of an ear infection: whining, scratching, and head shaking are often the first symptoms of the problem. Ear infections are common conditions in dogs, especially those with floppy ears such as Basset Hounds and Cocker Spaniels.
Red and hot ears can be caused by a sudden increase in blood flow caused by abrupt transitions from a hot to a cold environment, consumption of alcohol or spicy foods, hormonal changes and even some medications.
Don`t touch a dog who is sleeping or eating, or chewing a toy. Stay away from a dog who is barking or growling, as well as one who is running loose without a guardian, behind a fence, in a vehicle, or tied up.
Dogs are obviously different from humans, including in how they show affection—we kiss and hug, for example. They don`t really understand those behaviors so much and instead prefer to rub and cuddle up against you, and sometimes lick you.
In some cases — especially mild cases — an ear infection may heal on its own without any particular treatment. With a bacterial infection, the most common treatment is antibiotic ear drops and drugs to help manage pain.
Since ear infections sometimes go away on their own, treatment might start with monitoring the condition and managing your pain. Severe cases of a swollen ear canal and ear infection in babies generally require antibiotics.
Dab a cotton ball with hydrogen peroxide and add drops of coconut oil for your dog`s ears; it is an effective cleanser. Apple cider vinegar and equal parts water can be used to clean the ears against infection, but do not use this if the ear tissue is raw.
Apple cider vinegar helps by acting as a cleanser and an anti-fungal and antibacterial agent. Dabbing this into your dog`s ears sparingly can help to clean out the inside of their ears and treat the infection.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Q. One of my pet’s ears seems very irritated. What I can use to clean it with?
ANSWER : A. Ear Irritation can be caused by a number of things ranging from allergies, ear infections or even mites. Dirty ears can also cause irritation and problems. Knowing the type of problem is best for figuring out how to treat it.

For plain dirty ears that do not have any odor, redness or leakage of discharge/debris, a simple over the counter canine ear cleaner can be used. Gently soak some cotton balls or a washcloth with the cleaner, and then use these to wipe out the flap of the ear and opening to the ear. Do NOT use Q-tips as these can become stuck or lodged in the curve of the ear canal and may cause injury to the ear drum.

If the ear is bright red or itchy without any dirt or debris in it, it may indicate an allergy. Sometimes an allergy medication can help provide relief in this situation. Your vet can give you the correct dosages of an over the counter allergy medication to use, or may recommend one specifically for dogs.

For infections and mites, changes to the ear such as bad smell or lots of debris and discharge, flecks of black or brown debris, or scabs and sores in the ear may be present. In these cases, it is best to have your vet take a sample of the ear debris to test for mites or infection. Your vet can then give you an ointment that is placed and left in the ear between ear cleanings. Most vets will then recommend cleaning the ears twice daily and then leaving in the ointment after for a period of ten days.

Ear mites ARE contagious to other pets, so if your dog does have them, it is best to treat any other pets in the house at the same time to prevent the mites from spreading around continuously.

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. I have two problems with my 16 yrs old dog: he’s constipated and has a ear ache. What can I use to relieve these?
ANSWER : A. Constipation is a common problem in dogs that can be due to a number of things. However it is a good idea to make sure the constipation is not actually diarrhea, as some dogs can strain after a bowel movement, making it look like such. If constipation is present, adding a little pumpkin puree or plain yogurt to the diet can help make digestion easier and make stools easier to pass. However if symptoms do not resolve after a few days, it is best to speak with your vet.

For ear aches, it is best to have your vet examine the ear as many things including allergies, ear infections, mites and more can cause ear problems. If the ear is just dirty, then cleaning the ear gently with cotton balls or a clean washcloth and a dog ear cleaning solution can help. Do not use Q-tips as a dog’s ear has a 90-degree turn in it and placing Q-tips in the ear can cause damage to the canal or inner ear. However if the problem persists or cleaning does not help, it is best to seek care.

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. 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. 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. Can you use Floxin Otic for ear infections on dogs?
ANSWER : A. Floxin Otic is an ear cleaning solution designed for the clearing of ear infections in people. While it may be similar to dog products used for ear infections, it is best to bring it to your vet’s attention first so he or she can compare it to dog-safe products. It may be that it is in the same concentration and can be safely used, or your vet can instead recommend a product that is in the right formulation.

If you are seeing an ear infection in your dog’s ears, your vet can provide you with a dog-safe medication to use. Ear infections are usually treated over a period of ten days and involve cleaning the ear 2x daily and then placing the otic ointment in the ear to stay in place until the next cleaning.

Q. My dog is having ear problems. I have had her at two vets and they can not seem to find the cause. Can you help?
ANSWER : A. For a pet with chronic ear issues I would recommend checking her thyroid levels. Hypothyroidism can be a cause of chronic ear infections.

Then I would recommend having a bacterial culture of the ear debris to ensure the appropriate antibiotic is chosen to completely rid the bacteria in there. If there is resistant bacteria, the ear will appear to get better at first but then once ear meds are stopped they will thrive again and cause a re-emergency of the ear infection. Also longer treatment may be needed, for example instead of 7-10 days, perhaps 14 days continuously.

If all else fails, I would recommend a skull radiographs to look for signs of a narrow ear canal and/or an inner ear infection which will require not only topical antibiotic ointments put into the ear, but also oral antibiotics.
Most ear infections are caused by moisture in the ears, narrow ear canals, hypothyroidism or skin allergies. Each one has to be gone through systematically.