Dolphins have names for one another.
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The male seahorse carries babies and 'gives birth' to them instead of the female.
7
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
Rattlesnake mating sessions have been known to last more than 22 hours.
232
When dragonflies mate, their tails form a love heart.
22
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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