Ready, set, go Did you ever wonder which animals are the fastest... and the slowest? All mammals can move But how do these animals actually go from place to place? Dogs and cats can walk and run on all fours. Kangaroos can jump using their strong, back legs. Horses can gallop. Dolphins can leap and swim. Bats can use their wings to fly. Which animal do you think would win in a race? Look inside to discover which of the ten mammals...