Castorology (BEAVERS) with Rob Rich

2107.901 - 2134.137 Rob Rich

There is a central node of vertebra extending down through the tail that is in the center of it there, but it's more filled with more capillary like blood vessels. And so there's very lot of blood exchange in there that keeps it from freezing in those times. And again, serving that heat storage purpose. So other than that central area of bone going down the middle, it is entirely fat pretty much.