Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Dolphins have names for one another.
18
Ants tend to survive in a microwave because they find the coolest spot and wait!
17
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
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.
13
Cats lose almost as much fluid in the saliva while grooming themselves as they do through urination!
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