The Bible says that Noah brought a male and a female of every species onto his ark, thus ensuring the repopulation of the Earth after the flood. But what would Noah have said to the earthworm who tried to board solo? Or to other animal baby-bakers who are homosexual, transsexual, even nonsexual …

No wonder bucks and does scarf up entire backyard gardens: they've got to keep their energy up for their swinging sex lives.

They're the smartest creatures in the sea, and anything goes -- anything.

Meet Dad, aka Mr. Mom. But, kids, don't get too attached, particularly if Dad is a pipefish, a cousin of the seahorse.

Music, bondage, dancing: different strokes for different spider folk.