It's anyone's guess why some dogs decide to lap their own urine while others turn up there noses at the thought of sipping pee. There are, however, some popular theories that might explain this unusual and unsavory practice.
If your dog doesn’t have enough water to drink, he may just be thirsty enough to suck down some urine. Check the water dish frequently to make sure your pooch has plenty to drink to keep him hydrated.
It’s a possibility that your four-legged friend had an accident and knows that urinating indoors is wrong. It’s also possible he is just trying to get rid of the evidence.
Lack of Training
It is reasonable to assume that if a dog will eat just about anything, he may also drink up odd things as well. This might be the case with puppies or untrained dogs in particular. They may just not know any better and need further training. Try a firm “NO!” if you catch your canine companion nose deep in urine. Be patient and consistent to break this habit.
Is It Dangerous?
Although it sounds gross and the idea may turn your stomach, urine is actually sterile. So even if your doggie may have ingested some of the smelly stuff, no need to call poison control. Just keep an eye out for this behavior, stop it immediately when you see it happen, keep him hydrated and reward him for good behavior.