My Doberman is nearly 4 years old. Over the last few months he has started having hind issues, where his hind goes down and he has trouble lifting his legs when climbing steps. His hind legs go under his stomach and occasionally his hind legs shake and have given out. He has had extensive...

I am brand new to the doberman breed. My puppy is 10-weeks old today. I have noticed for the last 3 days that he acts like he has no strength in his back-end. When he runs, he runs fairly slowly in a hoping motion. He often does not like to come and will sit down a lot. When he goes to stand up...