It would take 1,200,000 mosquitoes, each sucking once, to completely drain the average human of blood.

When a polar bear cub is born, it can not see or hear. It takes approximately a month for the cub to start to see and hear.

Sharks are capable of going at least 6 weeks without eating; the record observed in an aquarium is 15 months by a species of shark known as the swell sharks).

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