Depends on how you define 'living', sport. Surviving? Sure, you won't starve, beating up kids' pets for their lunch money. But that's about what you'll get, starting out, lunch money from kids.

Gotta get real good at it, to make the big bucks. Get yourself some dragons, a couple of electric dinosaurs, that kind of thing.

Which also can be taken from random kids just wandering on the roads, because there's absolutely no exotic animal licensing or child protective services on this planet. It's like parents want their spawn to get devoured by local wildlife.