Add Yahoo as a preferred source to see more of our stories on Google. One of the most weird and wonderful products of evolution is the penis bone, or baculum. The baculum is an extra-skeletal bone, ...

Just because a female olive baboon has mated with a specific male doesn't mean he will be the father of her offspring.

Murder is the main reason why humans and other primates mate for life, according to scientists. Infanticide was the key driving force that caused us to evolve into a monogamous species, it is claimed.

The sight of a pair of monkeys blithely copulating in full view in their zoo enclosure has posed generations of parents a tricky dilemma. What exactly do you say to your budding little David ...