The skin of a female shark is much thicker than that of a male because males bite females during mating.
In a bid to encourage Pandas to mate, Chinese scientists have experimented with “panda porn”, explicit videos of pandas mating.
Male wolf spiders will engage in threesomes during mating season to increase their chances of escaping cannibalism.
The lesser mole rat not only digs an entire subterranean house for itself, complete with storerooms, halls, bedrooms, and a “wedding chamber” where all mating takes place, but actually constructs a separate bathroom which, when filled, is sealed off from the rest of the house.
Sea worms mate in the following way: at mating time, males and females swarm together. Suddenly the females turn on the males and bite their tails off. The tails contain the males’ testes and sperm. When they are swallowed and acted upon by the females’ digestive juices, they fertilize her eggs.
After mating, the female black widow turns on her partner and devours him. The female may dispatch as many as twenty-five suitors a day in this manner.
The female praying mantis devours the male while they are mating. The male sometimes continues copulating even after the female has bitten his head and part of his upper torso!