There's a rare breed of pig that looks like a sheep.
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Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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Cats sleep for 70% of their lives.
8
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
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A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
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A tortoise named Adwaita lived to 255 years old. To put it into perspective, he was born before the United States of America existed and his death was announced on CNN (1750-2006).
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Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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