I know you can't believe everything on the net but...

...if this is real it's friggin wonderful.

http://io9.com/5961874/paralyzed-dogs-walk-again-after-nose-cell-transplants

That is awesome, but I can imagine it would be very very expensive too. My dog has sciatica, something like that might really benefit her. She really misses agility and everyone asks me when she will be back. Unfortunately, I tell them she is retired from agility classes. Her exercises have been reduced to playing in the backyard and keeping up on obedience. I don't even do simple walks down the road as after 10 minutes it's too much on her.