coypu released into the wild is kept near large cities where people feed them leftovers from the kitchen. strengthening the banks

animal aquapark aquatic bank banks beaver braided branches bsnk burrow burrows can central cities complication coypu coypus domestic embankment escape europe farm feed feeding food herbivore introduce introduction invader invasion kept kitchen lake large leather leftover leftovers life meat myocastor nature nutrie outdoor people pond rat rats released reserve river rodent rods semiaquatic shore spiny spring stone stones strenghtening strengthening them three undermine where wicker wild willow