Beavers can be a great help in restoring wetlands. They're being released in California to help stop wildfires as their ponds are natural firebreaks...unfortunately when they build around humans it doesn't always work out. They've been known to flood neighborhoods and wash out roads.
I saw a documentary a while back where they were washing out roads (in Canada IIRC) by damning up the drains that run under the roads. They just have a built in need to stop flowing water. Instead of killing or re-locating the beavers, the guy being interviewed realized if they laid out a secondary conduit (large hose) in the drain, the beavers could damn up the drain but the water would still flow from one side of the road to the other. If I can find it again I'll post it
These (and canned tuna) are good for croquettes - I've been making the tuna version for years. They can also be used for an easy stuffing for savory pastries/hand pies like samosas