1.) Crows recognize human faces, particularly those who pose harm to them and their habitat. They live up to fifteen years and can pass on this information to their offspring, so there’s no chance they’ll forget you anytime soon.
2.) Newborn Pangolins tend to travel on their mother’s tail. When danger is close, the mom will ball herself up around the baby.
3.) For a brief period, cats delivered mail in Belgium. During the 1970s, the city of Liège “hired” 37 cats to deliver mail in waterproof bags. As expected, the cats weren’t effective mailmen. The shortest time spent on delivering a letter? 5 hours.
4.) Cougars are nature’s gardeners. They eat herbivores with seeds in their stomachs and then spread them far and wide through their poop. As a result, some can plant up to 94,000 plants a year.
5.) Many species of termites will mate for life. A female “queen” and male “king” will give birth to an entire colony. They might stay together for as long to 20 years, depending on the species’ lifespan. The rare cases of relationships ending can result in violence like Termites chewing off each other’s antennae.
6.) The red-factor canary’s coat changes color depending on its diet. Feed it any natural orange and red food like beets, and its feathers will change to match it.
7.) Clownfish are one of many sea creatures that can change gender. Generally, one female will school with multiple males. When the female dies, the dominant male will change their gender to take her place.
8.) There’s a common misconception that Quokkas will throw their offspring at predators to distract them. While not technically correct, Quokka’s evolution makes them terrible parents. They will instinctually jettison their babies from their pouches when predators are close. The babies writhing and hissing attract the predator while the mom escapes. They don’t technically throw their young, but the truth is close enough.
9.) Unlike humans, dolphins have to decide when to breathe consciously. There are documented cases of dolphins in captivity killing themselves by refusing to breathe in a form of dolphin suicide.
10.) The endangered Kakapo bird emits a musty, sweet odor that leads predators straight to it. This is why it is endangered.
11.) There are only two mammals on Earth that lay eggs, and they are both from Australia – the platypus and echidna.
12.) The Woodpecker’s tongues are very long and are wrapped around the skull. This is to provide a brain cushion while they peck.
13.) Polar bear’s bodies are incredibly efficient at storing Vitamin A. If you were to eat a polar bear liver, you would die. It contains enough Vitamin A to kill you 52 times.
14.) Rodents ranging from mice to guinea pigs, to squirrels all cannot vomit. They lack the brain circuit required for this behavior.
15.) Male giraffes taste the pee of females to determine if they are ready to mate. This is to detect hormones that show that the female is ovulating
16.) Goldfish don’t have a 3-second memory. Though not the smartest, goldfish boast a memory span of three months – better than most people I know.
17.) Female platypuses don’t’ have nipples. To feed their children, they sweat milk out of their pores, and the babies lick it off their skin.
18.) Not only is a tiger’s fur striped, but his skin as well.
19.) As if they weren’t cute enough, sea otter’s hold hands while they’re sleeping so they don’t drift apart.
20.) Flamingos are naturally white. A diet of shrimp, brine, and algae actually turns them pink.
21.) Bats aren’t actually blind – in fact, their eyesight is considered better than humans. Echolocation is just an added bonus to help them hunt at night.
22.) Lions used to inhabit Europe, but they were hunted to extinction before 100 BCE.
23.) Cats do not meow at each other. It is solely used as a way to get the attention of humans.
24.) Kangaroo’s need their tails to balance – if you lift their tale off the ground, they can’t hop.
25.) Whale hearts only beat nine times per minute – by comparison, human hearts beat between 60 to 100 times per minute.
26.) Puffins will use twigs for scratching themselves.
27.) Frogs can breathe through their skin. This isn’t the primary way they breathe, but a result of their blood flowing near the skin’s surface, allowing it to absorb oxygen.
28.) Some burrowing tarantulas befriend frogs. They will protect each other’s eggs and share food.
29.) The tongue-eating louse is what nightmares are made of. It will invade a fish through its gills and destroy its tongue’s blood supply, causing it to falls off. From there, it takes up residence and lets the fish find all the food.
30.) The blue whale has a heart the size of a small car and as heavy as a small elephant. You can hear it beat from up to 3km away.