What kind of illness is this?!?

[ellensy]

hi!

my friend's dog, Jasper, suddenly fell ill, he's 5 years old. His hind legs suddenly became numb and he just kinda drag his hind legs in order for him to walk. Jasper made a trip to the vet and he was confined for examination. The vet said that a nerve in his legs was destroyed and that made his hind legs useless. What's worse is that the vet said that Jasper won't be able to walk again, EVER! This happened too fast -- just within one day. The vet also said that his liver is failing. HOW COME?!? What kind of sickness is this???

Hope that somebody will be able to help me and my friend.

Thank you.