If it's any consolation, Sawbones is joking a bit. It wasn't all cats, rather, whatever animals could be found. And they weren't alive. Sawbones likes animals.
But hey. If someone's going to learn to saw limbs off, they can't exactly practice on a person.
He learned his skills on animals? Interesting. Not sure if I get that right. I suppose that is possible. It is like animals have a long history of being experimented on in medicine when it comes to testing out new things but well, that is how it is... and I guess used to be.
It wasn't all aimless expreimentation, someone did teach him to begin with. But he was left as the last... healingy person in his village before the education was complete, so had to figure things out on his own from there on out. And that did involve a lot of animals. ¬u¬'
But hey. If someone's going to learn to saw limbs off, they can't exactly practice on a person.