Tigers can reach a length of up to 3.3 metres (11 feet) and weigh as much as 300 kilograms (660 pounds).

You can tell the age of a whale by looking at the wax plug in its ear. This plug in the ear has a pattern of layers when cut lengthwise that scientists can count to estimate the age of the whale.

Watermelon is considered a good gift to give a host in Japan and China.

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