One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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A group of kittens is called a "kindle".
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There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
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There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
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In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
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Camels and llamas can cross breed. The offspring is called a ‘Cama’.
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