Why is November called the beaver moon?

Answer 1

November's moon is called the beavers moon because this was the time to set beaver traps before the swamps froze, to ensure a supply of warm winter fur. It's also called Frosty Moon.

Answer 2

November's full moon is commonly referred to as the Beaver Moon because it was the time of year when Native American tribes set beaver traps before the winter freeze. The name stuck and has been used to signify this particular full moon.