Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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The male seahorse carries babies and 'gives birth' to them instead of the female.
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Bats sleep 18-20 hours per day.
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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!)
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It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
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Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
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Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
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