Okay kiddo, you know how beavers build these big homes in the water called dams? Well, sometimes they need to find something to eat, like a twig or a leaf, but they can't swim while carrying stuff in their mouth, that would be hard. So what they do is they put the thing they want to take with them in their tail! Yes, their tail! It's really flat and can kind of grip stuff. Then they swim back to their home and when they get to the entrance of their dam, they wiggle their tail and drop the thing they were carrying. That's what we call a "beaver drop".
It's kind of cool, right? Like a beaver has its own little hands, except it's in its tail! And it's all because beavers are really good at figuring out ways to solve problems, like how to carry things in the water without using their mouth. They're just really creative creatures!