The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
Parrot parents "name" their children with a signature call.
112
Camels and llamas can cross breed. The offspring is called a ‘Cama’.
10
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
When dragonflies mate, their tails form a love heart.
22
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2