Thank you for reading my blog. I hope you are having a really good day.
I want to tell you a few more things about the Beaver, because they are such great engineers (builders), and so organized. I told you before that the Beaver builds a dam on a stream In order to form a pond for it, and it's family, to live in. But just how does it build this dam? The answer is the really neat part.
First the Beaver has to cut down some trees. Well "cut" isn't the right word , it's "chew". That's right, the Beaver uses its two front teeth to chew through the trunk of the tree to make it fall. You may have seen your father, or some tree men, cut down a tree with a chain saw. Well, imagine having to cut the tree down using your teeth. And the Beaver is so skilled at bringing down a tree that he can make it fall exactly where he wants it to fall.
After the tree is down, he chews off branches just the length he needs to build his dam. He will drag rocks and stones into the water as a base, or foundation, for his dam, and then bring in some larger branches to drive into the stream bottom; and others toweave between the branches and stones, along with some mud to put between the branches and stones to patch any holes. And, because the water in the stream might wash the interwoven branches away, he will include in the sides of the dam some longer, stronger branches that are not only woven between the branches and stones in the water, but also extend out onto the bank of the stream where they are anchored to large boulders, or the trunks of large trees. This gives the dam a great deal of strength, and keeps it from being washed downstream.
Keep in mind that all of this initial work is done underwater, where it's hard to see what you are doing. It's not until the very end of building the dam that you see the top part, where the stream is flowing over its top. But believe me when I tell you that most of the hard work is on the bottom, where you can't even see it.
And you know what? At the same time the Beaver is building the dam, he is busy building his house, which I told you about before. He needs to make the house just the right height too, so that when the pond is finished the level of the water is exactly right. If he builds the dam too low, he won't be able to have an underwater entrance. If he builds the dam too high, the pond will flood his living quarters.
Because the Beaver has no defenses against predators (just like us rabbits), he has to be in the water most of the time. (Us rabbits don't need to be in the water because we just outsmart predators). If he has to go under the water to escape danger, he can hold his breath for up to 17 minutes -- and that's pretty good. You probably have a hard time holding your breath for 1 minute. In the winter time he has figured out something else that helps him. And that is that when the pond freezes solid, he will let some of the water out of his pond, which lowers the level of the pond. That creates a space between the water and the underside of the ice, and the Beaver can breath the air in this space. The ice doesn't sink down as it is supported by the sides of the pond.
With all that to do the Beaver is the hardest worker in the animal world. And that's why you hear people say that someone who is working all the time is "busy as a Beaver!"
Keep you chin up
Robert P. Rabbit