There's a new episode of PBS Eons. This one is about Casteroides, which lived in North America up to about 10,000 years ago.
It’s important to us that you understand how big this beaver was. Just like modern beavers, it was semiaquatic -- it lived both on the land and in the water. The difference is that today’s beavers do a pretty special thing - one that the giant beaver probably didn’t, or couldn’t, do.
