Sunday 9th July 2023
    Difficulty: Hard

    Beavers (Quiz #233)

    Photo by <a href="https://unsplash.com/@niklas_hamann?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Niklas Hamann</a>
    Photo by Niklas Hamann (Unsplash)

    Beavers are large semiaquatic rodents of the Northern Hemisphere.

    1. Why are beavers' incisors (gnawing teeth) orange?

    2. Why do beavers slap their tails on the water?

    3. Beavers have anal glands that secrete a substance called castoreum. What is this used for?

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