- A bear in hibernation loses up to 25% of its body weight.
- You can tell the sex of a horse by its teeth (most males have 40, females 36).
- Hippopotamuses have killed more people in Africa than any other animal.
- Hippopotamuses have skin 3.8cm (1.5in) thick.
- The makers of the board game Monopoly print over 50 billion dollars worth of Monopoly money every year.
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