Why does my puppy's eyes water?
Epiphora in Dogs.
Epiphora is a condition that causes an abnormal overflow of tears.
Causes of epiphora due to the shape of the eyes is seen in many breeds.
The overproduction of tears can be congenital due to distichiasis – turning in of the eyelashes, or entropion – the turning in of the eyelid.
If your dog is drinking excessively (polydipsia) it is possibly because he is losing excess amounts of water for any of a number of reasons.
While a number of diseases result in excess water intake and urine output, the most common of these diseases include kidney failure, diabetes mellitus and Cushing's disease.
Dogs also lick because they like the taste of an owner's salty skin and out of habit.
Mostly, with domestic Dogs, it's a sign of affection.
Licking releases pleasurable endorphins which gives Dogs a feeling of comfort and pleasure — like the feeling people get when they are biting their nails — it relieves stress.
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