Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The largest breed of rabbit is the Flemish Giant.
65
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
Parrot parents "name" their children with a signature call.
112