Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
A dairy cow can produce more milk when listening to music.
446
A domestic cat can sprint at about 31 miles per hour.
274
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6