Well, as it turns out, the dog did blow out his other knee. He just recovered from surgery on the left back knee, now he'll have to have the right knee done, too. The poor thing looks miserable as he tries to hobble around, and he'll have to spend weeks and weeks in a crate again as he recovers. Still, because he's a dog, his spirits are good. I guess we could all take a lesson in that, huh?
Well, it might also because I gave him a big bone to gnaw on so he would stay still and stop trying to go up and down the stairs.