The heart of a mouse beats 650 times per minute!
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Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Snails breathe through their feet.
34
The average housefly lives only two weeks.
39
A killer whale's heart beats 30 times a minute under water, 60 times a minute on the surface.
30
A tuna fish can swim 100 miles in a single day!
29
Unsinkable Sam (nickname of a German ship's cat) who served on 3 warships, one German, two British, all sank in action. The cat survived each sinking, floating away on wooden planks to rescue.
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