I think Riley tore his cruciate ligiment today. I was gone for the day at a study group. My family said he was laying on the front step and wouldnt get up (he frequently lays on the step and watches things in the nice weather). He wont put any pressure on his left hind leg, and cant get up without help. My vet felt it tonight and strongly suspects it. He will go in tomorrow for x-rays to confirm. If its completely torn then he will need surgery. If its not then most likely will need heavy crate rest to heal. Either way its going to be a long recovery i suspect. Please send some healing thoughts to my poor boy who just cant seem to catch a break.