Outstanding wood collectors. Mine has 770 weight and can carry 3K wood plus rider. Holds wood at 1/5 weight and can be used as mobile smithy. This teamed with a doed can construct a base in minutes. Must have.
To empty a Beaver dam(always completely empty to allow more to spawn), open Iventory of dam, then immediately close it and jump on a semi quick tame(preferably a bird). The beavers will now follow u anywhere. Lead them far away, or over a ledge then return and empty tha dam. *this has to be done for each individual dam.
These beavers have become one of my most used "Dino". Their ability to hold wood at 25% weight and stone at 50% weight comes in handy when building. I recommend lvling weight and breeding high lvl beavers. Breeding is very easy. Once they are born and imprinted let them wander around bushes in a protected area. They will passively collect berries to their full weight capacity (full as in once they're grown). This means they are self sufficient even in the baby stage.