Experienced and professional animal trainer provide their insights in answering this question :
A. I would be concerned about a urinary tract infection and recommend you get him assessed as soon as possible

How to Identify Common Pet Problems ?

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

Excessive drooling and licking paws can be a result of many things. It could be seasonal allergies, or it could be an anxiety response. Whatever is causing it, it`s always best to get to a vet to investigate.
In addition to accompanying mouth pain due to dental disease or a foreign object, drooling, and lip licking can indicate your dog might be feeling nauseous. Sometimes, when you are nauseous, your mouth might feel dry and sticky. The same feeling can happen in dogs. This causes them to drool a little more than normal.
Dental problems, injury, infection, irritation of the mouth or lips or something stuck in their mouth, teeth or throat could also be to blame. Drooling can also be a sign that your dog has ingested a toxin or poison or has heatstroke.
Tartar buildup and irritation of the gums can also lead to drooling, as can an infection in the mouth. In addition, a foreign body can lead to slobbering. Anything caught between your dog`s teeth or lodged in his throat, such as a sliver of bone, could be a potentially serious problem.
Nausea and eating non-food items (e.g., balls of dust or clumps of hair) are the most common reasons for unexplained swallowing or licking, but esophagitis (an inflammation of the esophagus) caused by acid reflux or oral diseases that affect the tongue or gums may also result in constant licking and gulping.
Hypersalivation is a condition caused by various factors, including infections and allergies. Suppose you notice your dog drooling more than usual or experiencing unusual thirst during activities such as walks on hot days when they generally pant heavily to cool off. In that case, visit the vet right away.
“Excessive drooling can definitely be cause for concern if a dog has pain in their mouth, experienced trauma, something is stuck in their mouth, they`re repeatedly vomiting, they aren`t mentally aware and alert or is having any trouble breathing,” Dr. Singler says.
Your dog may foam at the mouth due to various harmless reasons such as teething, overactivity, or medications. However, if you suspect that your dog may have consumed something poisonous or has a heart condition or Rabies, you should call the veterinarian immediately.
Sialorrhoea is a frequent symptom of neurological diseases (e.g. Parkinson`s disease, motor neuron disease, cerebral palsy, and stroke) and is defined as excessive saliva accumulation leading to unintentional loss of saliva from the mouth.
Even though dry mouth (xerostomia) is a common symptom of anxiety (acute stress), hypersalivation is a common symptom of hyperstimulation (chronic stress). As the degree of hypersalivation increases, so often does hypersalivation, sialorrhea (excessive drooling), squirting, and spitting.
But anxiety can cause issues that may lead to the feeling of needing to drool, with excessive saliva that on some occasion may pour out of your mouth. These reasons include: Thinking About Saliva Anxiety causes your mind to over focus on various bodily functions.
Canine parvovirus (CPV) is a highly contagious viral disease of dogs that commonly causes acute gastrointestinal illness in puppies. The disease most often strikes in pups between six and 20 weeks old, but older animals are sometimes also affected.
Many conditions can lead to excessive thirst or dehydration in your dog, including diabetes, Cushing`s disease, cancer, diarrhea, fever, infection, kidney disease, and liver disease. Sometimes, however, it may not be the condition itself causing your dog`s excessive thirst, but the medication used to treat it.
Potential causes include inner/middle ear infections, intoxication, strokes, tumors, infectious or inflammatory diseases (meningitis), idiopathic vestibular disease (also called “old dog” vestibular syndrome), or other less likely causes.
Drooling. Drooling can be a sign that a dog is experiencing pain in the stomach or that it is nauseous. Excessive drooling and gagging can mean that a dog is in distress and experiencing extreme pain.
Signs that a dog has liver disease can vary and include loss of appetite, vomiting, stomach ulceration, diarrhea, seizures or other neurologic problems, fever, blood clotting problems, jaundice (a yellow tinge noticeable in the skin, mucous membranes, and eyes), fluid collection in the abdomen, excessive urination and …
Foaming at the mouth is often cited as one of the most notable symptoms of rabies in dogs.
As long as your dog is drooling clear slime, it clears up fairly quickly, and your pup isn`t showing any signs of distress, this type of drooling is completely harmless. There are, however, some breeds that normally drool a lot, primarily because of the shape of their lips and muzzles.
When a dog eats, the salivary glands in their neck and jaw area produce saliva to help with digestion. Drooling occurs when saliva escapes the mouth. It may happen if your dog sees a treat or when you`re opening a can of dog food.
Dogs with allergic reactions to substances or insect stings may start drooling excessively as a response to the problem. This often happens when dogs are stung in or around their mouths, but it can happen with any allergic response as well.
Dry mouth, or xerostomia (zeer-o-STOE-me-uh), refers to a condition in which the salivary glands in your mouth don`t make enough saliva to keep your mouth wet. Dry mouth is often due to the side effect of certain medications or aging issues or as a result of radiation therapy for cancer.
Your body is more prone to acid reflux during periods of intense stress and anxiety, which can negatively impact your salivary glands and lead to less saliva production. Furthermore, it can also result in a sticky feeling in your mouth and bad taste, which are common dry mouth symptoms.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Q. My two year old havanese who never drools is drooling profusely. He peed the bed twice last night which he never does. He keeps licking his legs.
ANSWER : A. I would be concerned about a urinary tract infection and recommend you get him assessed as soon as possible

Q. My dog licks his feet and legs and they are turning brown. He is a white dog. Can you help?
ANSWER : A. Licking the feet and legs can be caused by a number of things in dogs including allergies, illness or even stress behaviors. Allergies are the most common in dogs, with yeast infections coming in second. Allergies can cause the area to become red and itching, making your dog want to lick and chew on them. Over time, the area may become stained from saliva, especially in lighter or white-coated dogs. Yeast infections are also common between the toes, and may cause a smelly “corn chip” smell to appear near your dog’s feet. Again, dogs will attempt to lick and chew to relieve the itch. Keeping the feet clean and dry can help relieve both allergies and infections and pet wipes or a baby wipe of all paws when your dog comes in from outdoors may also help. Keeping your dog from licking the space with either dog booties or an Elizabethan collar is also good as it will prevent secondary infection and staining of the paws and legs. If your dog is determined to keep licking and keeping the feet clean and dry do not help, then your vet can help by providing a medication to treat any infection or provide relief of allergies.

Q. I have a 13 1/2 year old Shih Tzu. How old is he in dog years?
ANSWER : A. It’s used to be that dog years were 7 years to every 1. Now it normally around 5 years to every year as long as your dog is healthy and kept up with vaccines. So he’s about 68ish in dog years.

Read Full Q/A … : Shih Tzu Age

Q. My 5 year old Dachshund has broken his rear leg. A trip to the vet is impossible for two more days (rural area), can I give him something for pain?
ANSWER : A. If your dog has a broken leg, then veterinary care is a must. If you can get into contact with your local vet before seeing him or her, they may be able to give you information on an OTC pain medication that could be safe to give dogs. Do not attempt to give any medications without first consulting your vet as many pain meds can cause kidney/liver failure or stomach ulceration if given to dogs. In the meantime, keep your dog on strict kennel or bed rest and only taking him out for short potty breaks is best to keep pain down and from letting the leg get further injured.

Q. My dog keeps licking himself in the same area, what does this mean?
ANSWER : A. Excessive licking in one area often leads to a condition called Acral Lick Dermatitis or Lick Granuloma. By constantly nibbling on one spot, which is usually on one of front legs, dogs can cause skin irritation and inflammation and not uncommonly skin infection.

There is a long list of possible causes of this problem. In many dogs this is purely a behavioral issue related to anxiety, boredom or stress. Dogs with joint pain like to lick over the painful area to alleviate pain. Skin allergy or infections, skin foreign bodies predispose dogs to Acral Lick Granuloma as well. Finally, low thyroid hormone level is believed to play a role in developing Lick Granuloma.

Treatment is often long, and close cooperation between the owner and the vet is required. The effort should ultimately be directed to identify and treat the underlying cause.

Read Full Q/A … : Excessive Dog Licking

Q. Early in the morning she goes licking everything, the bed, pillow and all. Tried giving her water but refuses to drink. Any advice?
ANSWER : A. Licking can sometimes be medical or behaviorally caused. As with any sudden new behavior in your pet, it is a good idea to schedule a wellness exam with your vet to make sure there are not any health issues causing it.

Behaviorally, licking can be an anxiety-related behavior, and may become habitual to your pet. If something stressful is happening in the morning such as people going to work, kids waking up and being noisy, or new routines, it may have caused a sort of “ritual behavior” from your pet in the form of licking. Identifying the stressor may help to break the habit.

Giving your pet a calm place to relax in the morning may help, as may providing a pheromone diffuser to help during any stressful transitions. These release a calming pheromone that can help reduce stress-related behaviors. Also offering something GOOD to lick such as a Kong filled with peanut butter, or an ice cube to move around the house may keep her occupied and licking that instead of your furniture.

Q. Why does my pup lick everything?
ANSWER : A. Puppies are very much like babies and young toddlers, and will explore the world with their mouths. This may include chewing objects, or licking them. Puppies and other more submissive dogs may also lick people as a way to “appease” them and try to gain favor. If your dog is licking objects, then using something such as a no-lick spray and providing appropriate other toys to explore can help curb the behavior. If you are the one being licked, then ignoring your dog or getting up and moving away when the licking begins can help stop the behavior. Be sure, however, to still give your pup lots of praise when NOT licking!

Q. My Shepherd mix lately follows me everywhere. In bed has to be close to me, laying on my head and on the couch she she tries to get on back cushion
ANSWER : A. If you haven’t done so yet, if it’s a new behavior check with the vet that there is no underlying health issue. Otherwise maybe something happened that has triggered a bit of anxiety. She will need help learning it’s okay to have some solo time. If you have a bed for her, try turning that into a much more inviting space by offering special chews and treats only on her bed and ignoring her if she demands attention. If she keeps jumping on the couch, keep luring her down and luring her to her bed while saying “bed” and eventually she should stop. A good idea is to have the bed on the floor next to the side of the couch you sit at most. That way she still has close comfort of being near you without crowding you.