That is soooo sad

A long time ago when i was younger i remember we got a dog from a shelter it was kinda in the same spot he nipped a few times when people took him out.
They where going to put him down the next day we went in there and wanted to look at him they did give us a hard time at first but after being very very pushy we did get to take him out.
We did have to sign a waivier if he bite us there not resonsable but he did'nt and we ended up coming home with him.
He never did nip us ever.
I really believe that dogs can tell how people are and maybe these people where not good people.

I don't understand why they would'nt let you have the dog if you signed a waivier.
Instead of what happened