Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
The seahorse is the only fish to have a neck.
12
Dogs sometimes fake being sick to get attention.
26
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
Lobsters have blue blood.
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