  Grey wolves have no critical natural enemies, although bears sometimes dig up wolf dens to kill and eat young wolf pups. The grey wolf's only critical enemy is the human â¦ , who unhumanley shoots and poaches the wolf. Grey wolves have no critical natural enemies, although bears sometimes dig up wolf dens to kill and eat young wolf pups. The grey wolf's only critical enemy is the human â¦ , who unhumanley shoots and poaches the wolf.