The Cutest Creatures on Earth Part 3: 40 More Adorable Facts

Virginia opossums have a gestational period of only 12 days. They are weaned off their mother’s milk after 70 to 125 days, after which they lead mostly solitary lives.

Spotted Hyena milk has the highest protein and fat content of any terrestrial carnivore.

When a bunny flips on its side, it shows that the critter is relaxed and feels secure.

The Pudu deer is the world’s smallest deer. They live in bamboo thickets to hide from predators.

The highland cow of Scotland has an unusual double coat of hair. On the outside is the oily outer hair—the longest of any cattle breed—covering a downy undercoat. This makes them well suited to conditions in the Highlands, which have high annual rainfall and sometimes very strong winds.

This is a Tardigrade, or Water Bear, under a confocal laser scanning microscope. Tardigrades can go into a state of suspended animation and survive for a long period of time without water or oxygen. They are also able to survive in the vacuum of space.

Clouded Leopards are one of the most talented climbers among the cats. They also have the longest canine teeth relative to their body size of any cat species, gaining them the title "modern-day saber-tooth."

They are round and fluffy and sort of have wiggly little ears, have dubbed the name "sea bunnies". They are actually sea slugs and belong to the wild group of mollusks called nudibranchs.

Gouldian Finch chicks have luminous nodules called papillae on the sides of their beaks and markings on the inside of their mouths. They act as a sort of “beacon” to direct the parents to the hungry mouths of their chicks in dark nest cavities. 

Hedgehogs are called "the gardener's friend" as they help keep garden pests, such as slugs and snails under control.