Beavers build dams and create ponds to create wetlands. Other animals, such as fish, mammals, waterfowl, songbirds, amphibians, and insects, benefit from this ecosystem. Experts estimate that there are 5-6 beavers per food cache on average.
Answer: What they do is this could block waterways so that otters have a better chance also beavers help people by they use broken wood so they aren't wasting trees.
