The lifespan of mammals is about 1 and a half billion heartbeats.
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The female pigeon cannot lay eggs if she is alone. In order for her ovaries to function, she must be able to see another pigeon.
65
The giant squid has the largest eyes in the world.
62
The average life span of a hermit crab is 75 years!
45
Dalmatians are born without spots.
101
There is a species of clam that can grow up to four feet long and weigh up to 500 pounds.
89
Ants don't sleep
15
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402