It would be hard not to stare, wouldn't it? Like talking to someone with a growth on their face, it's hard not to stare. But little monkey had better be careful, lest mommy should come to an abrupt halt. You don't want a face full of that.
Sep 4, 2010
Why do some monkey species have red butts? For some, it's a sign that a female is sexually mature. For others, the rear becomes nice and swollen, and it's used as padding for sitting (I've got similar padding, though not due to swelling or redness).