Sven is a guinea pig my mother had when I was younger, his previous owner hadn't fed him proper food so he'd gotten a taste for meat. It was kind of funny in a really sad way, Sven must have been so hungry and the kid fed him from his plate, no one thought the kid how to take care of a guinea pig so he didn't know any better.
This dress up is inspired by that guinea pig. He never ate beef or chicken to my knowledge, just ground beef, but we didn't exactly encourage his animal consumption, so who knows what he was used to in the past.
Besides a strange diet he was a normal guinea pig, he didn't have horns or fangs. Glad we got that out in the open.