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Drooling

Salivary cysts can sometimes form under the dog's tongue, these look like large blisters but they can also appear under the neck skin at the corner of the jaw. Tongue wounds can sometimes be caused by dog fights or by the dog accidentally biting his own tongue.
Treatment

The salivary gland can be drained and the gland is removed. If you are worried about the bite on your dog's tongue you should consult your vet. If your dog is finding it painful to eat, you should feed him soft bits of chopped up food until he is able to eat alone.

Drooling
Dry Nose Symptoms in Dogs

A wet nose of a dog is associated with a dog’s good health. A dog’s nose remains wet due to humidity produced in the nasal glands. In a case of dehydration, a dog’s nose can become dry for a short while. A dog that has recovered from an infection at an early age, could suffer from a dry nose permanently. When a dog is sick, it can have an extremely dry nose; this can be associated with a fever. A dry nose is caused mainly by infections, which can affect a dog’s whole body or is centered just in the nose.

There could be some changes in the appearance of the dog’s nose. It could become flaky and crusty in texture. There sometimes is a loss of pigmentation. If the dog’s nose becomes cracked, this can cause extreme pain. If the dog is ill, then it often will have a warm, dry nose along with other symptoms these can include a reduced or loss of appetite, lethargy, diarrhoea or vomiting.

If the dog’s nose appears light pink in colour, then you should consult the veterinarian about skin protection. It’s considered normal, if a dog’s nose becomes dry in the sun, or dry due to cold and becomes wet again when in the warm. But if the nose remains dry for a long period, then consult a vet immediately.

If a dog is suffering from dry nose, they should be given plenty of liquids frequently. Adding a small quantity of milk to its drinking water can help. Applying moisturiser is also helpful in keeping the nose moist. If the condition persists, then the dog will need to be examined by a veterinarian to receive an appropriate treatment. Dry nose is one of the signs of a serious health problem within dogs.
Dry Nose
Mouth & Nose