Page 20 - Beavers: Skilful Dam Constructors

Imran: To be honest, I couldn’t think of how to do it
either. But I read about it once. Beavers calculate how to
make the tree fall into the water and gnaw the tree at a
particular angle. But when they fail, as they sometimes
do, they drag the tree into the water with their teeth.
Karim, I think this is enough for today. Would you like me
to tell you more about beavers when we get back to the
camp? We could read about them if you want.

Karim: Yes, I’d love to do that. I am amazed at how
beavers can make such calculations and act so
intelligently. It is also confusing. Why do they dam the
river to build a home? Don’t their teeth wear out with
eating bark? I’ve got lots of questions about this. I could
talk about them all night.

Imran: OK, but we must return to the camp now.
We’ve lost track of the time chatting, and it’s almost dark.
Let’s go back before mom starms worrying about us.
Besides, I feel sleepy and tired. Come on, hurry up.

They hurry back to the camp in a rush. However,

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