Red fox mating involves screaming, copulatory locks, and lifelong relationships.
Tarantula mating involves sperm webs, courtship dances, and fang clasping. And sometimes sexual cannibalism.
Homo floresiensis, a diminutive hominin dubbed the hobbit, lived about 17,000 years ago on a remote Indonesian island.
In the months preceding Christmas, Santa's sleigh-pulling ungulates are engaged in a very different activity — mating. Reindeer sex involves herding, defending harems and ignoring lovers.
The complicated world of hyena sex involves social hierarchies, weird and potentially dangerous courtship rituals and female pseudopenises that make forced sex impossible.
When it comes to sex, are butterflies as nurturing and gentle as they appear to be, or is there a more aggressive side to their mating?
Homo erectus was an ancient human ancestor that lived roughly between 2 million and 100,000 years ago.