re: How do you know when it is time to put down your dog?

One of the hardest things you'll have to do, especially when your pup is still having some "good" days. Just had to put down my lab,17 years old, who's back legs were failing him. Went through the same thing, good days give you hope but the more frequent the bad days become, the harder it is to not see the writing on the wall. It's all about quality of life, when your pup is no longer enjoying life, it's time. Good luck & prayers for the family.