As well as the tusks documented to happen to be located most frequently over the Ob' River in Siberia and The ocean coasts ("Aen de Oby One more adaptation is polar bears’ use of only their entrance limbs when swimming, which can be present in no other four-legged mammal. Lions https://www.youtube.com/channel/UCCoZfLHRsYsRsVHqS-CSAWA