Re: I knew it! Cat's purring is healthy and therapeutic!!
The space applications are very interesting. If bone density can be maintained just by strapping several cats to an astronaut, I say we go for it. Besides, we can't bring dogs on deep space missions because they can't go outside to poop.
Dogs can be trained to use a litter box. The animal crap, along with the human feces, could be bagged up and used to line the ship interior walls against interstellar radiation. Everybody wins!
Warp Speed, Mister Nimoy.