Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Moths are unable to fly during an earthquake.
328
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Dogs sometimes fake being sick to get attention.
26
Female kangaroos have three vaginas.
2
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17