Just when the internet was shocked by the drama of the penguin love triangle, another penguin relationship has restored people's faith in love. Dotty and Zee, two Humboldt penguins who call Bremerhaven Zoo home, are celebrating their 10th anniversary together. Dotty and Zee are also both male, and their loyalty to each other has drawn the attention and admiration of many.
If you have the ability to change sex up to 20 times, would you stay faithful to your mate, like the chalk bass? Apparently, this bass is not all about that bass.
A new research suggests that early humans may have stop being polygamous and stick with one woman for the rest of their lives due to the spread of sexually transmitted infections (STI).
Some prairie voles are monogamous, while others seek out multiple mates. In a recent study, researchers from the University of Texas at Austin reveal sexual behavior is largely controlled by genetic differences in the rodents' brains, suggesting natural selection has allowed for both characteristics to co-exist.
A male's sperm has one job -- to fertilize a female's eggs. So why is sperm from rodents so much longer than that of larger mammals, such as primates, tigers and even whales? Researchers may now have the answer.
Male crickets often use edible gifts to attract females during mating. However, unique proteins contained in this gift may alter female's behavior to ensure reproductive success.