Rattlesnake mating sessions have been known to last more than 22 hours.
232
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
A lion in the wild usually makes no more than twenty kills a year.
186
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Dolphins have names for one another.
18
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293