Big cats are NOT pets!

I've got a petition for you to sign: tell congress that big cats are NOT pets!
It's really stupid but only in USA there's about 10 000 to 20 000 wild big cats like tigers and lions living captive in people's homes!!!
This animals are wild, they need big space and nature and THAT sure can't exist living in people's home...some of them even live in warehouses, cramped backyards, kennels or basements their entire life...it's sad and outrageous.
So camon sign it: take action!