We had a beaver dam and whenever we tore it down the beavers would come swimmin over to fix it cuz they could sense the water current, thats just what i was told. Maybe you could try tearing it down then sitting by it and waiting for them?
Had a guy tell me that you can rub some vaseline on the nose and the tail head of a heifer if she is coming into cycle to prevent other animals in the show ring from riding her. Don't know if i works, havn't had to try it.