Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
The Basenji dog is the only dog that is not able to bark.
4
15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
1
Penguins have a gland above their eye that turns saltwater into freshwater.
12