Furries like to draw genitals on cartoon animals. So they love to draw tits on animals, like Foxes.
I get the Foxes – it makes sense. A female fox with a human body may need tits for the same reason we do.

BUT WHY THE FUCK DO BIRDS HAVE TITS?
WHAT IS IT SUPPOSED TO DO WITH THEM? ITS DUMB.
YOU DRAW DOG DICKS FOR THE SAKE OF “REALISM“, BUT BIRD TITS ARE PERFECTLY FINE BECAUSE ITS FOR SEXUAL PLEASURE?
FUCK NO YOU DUMB SHIT. THEY SHOULD NOT HAVE THEM.
YOU MOTHERFUCKER, YOU STUPIDASS MOTHERFUCKER. TELL ME! WHAT IS A BIRD GONNA USE ITS TITS FOR? SON OF A BITCH!