There are over 60 species of mammal in Britain. They live on the ground, in the sea and in the air. Bats are the world's only flying mammals that are capable of generating their own lift. There are some flying squirrels, but they only glide between treetops. We are privileged in that there are 17 different species of bat in Great Britain. The Pipistrelle bat weighs the equivalent of a 2p piece!
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