A beaver's front teeth are bright orange because of their super hard enamel coat. These teeth must be sharp because the beaver uses them to cut down trees. Beaver's teeth never wear out because they never stop growing!
Going, going
Going, going Fish, crayfish, water snails, mussels and
amphibians who live in North America's lakes, streams and rivers
may be in danger of extinction. Factors such as pollution, dam
construction and introduction of exotic species all have an effect
on the future survival of native species. 9 OCTOBER 1999, P. 27
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