It's probably a female squirrel and it's an overgrown baby sucking it's mothers nipple because they live in a box in someone's house, so they have nothing else to do. Either that or it's a female squirrel sucking a male squirrel's dick for the hell of it. It doesn't happen often enough in reality. Least likely, is the possibility that it's gay squirrels sucking nut-bag. But that is the one Internet angstivists are fixated on, of course.

Photographing gay squirrel boners must be, like, winning the lottery in nature photography.

What's the big deal? Those are nuts.

EW!