Imagine the look on scientists’ faces when they discovered that an isolated female fish in a university aquarium tank had developed a male sexual organ and reproduced -- with herself.
Bondage during mating can be a matter of life and death for the long-limbed arachnid.
A Brazilian frog will do almost anything to grab the attention of females, including singing, toe tapping, arm waving and squealing.
A survey of over 100 animals shows which ones have the most impressive goods.
It's hard to imagine a shark that works harder for love than the glowing, grooving velvet belly lanternshark.
Mating is the key to the survival of a species, but did you know that some animals mate to death?
Male and female dinosaurs from the same species sported different looks.
The deep-sea dwelling vampire squid could have 100 times more sex than its shallower-residing relatives.
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