Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Jaguars frequently get high by eating hallucinogenic roots, which also increases their senses for hunting.
6
15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
1
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23