Grey seal
species of seal
Would a dog respond to bell before Grey seal?
Grey seals have no ear flaps and their ears canals are filled with wax. Grey seals hear better underwater when their ears open like a valve. Dogs have sensitive ears that can hear as far as a quarter of a mile away.
How sensitive is a grey seal's hearing on land? How sensitive is a dog's hearing on land? Is #2 better than #1?