Angler fish mating begins when the male angler fish literally sinks his teeth into the female. He attaches himself permanently and lives as a parasite on the female's larger body. However, as their ...

For some animals, reproduction comes at the ultimate cost—their own lives. While this may seem extreme, it's a natural strategy to maximize reproductive success. These species invest everything into ...

From the eerie croak of a tropical frog to the haunting call of the howler monkey, the animal kingdom is filled with some wild and wacky mating calls. But which do you find the most appealing?

Koalas have a well-earned reputation for being dopey. Sleeping 19 hours out of every 24, and feeding for 3 of the remaining 5 hours, there doesn't seem to be much time for anything else in their ...