An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
The cat brain weighs about 30g.
167
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The lifespan of mammals is about 1 and a half billion heartbeats.
127
The ant can lift things 10 times its own weight.
33
A crocodile cannot stick out its tongue.
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