A Flamingo's head has to be upside down when it eats
Though most people are unaware of it, flamingos are known for standing in shallow water on one leg. This is because of their unique development, which requires them to use the bristles on top of their beaks to filter out water and dirt that gets sucked in with their meal.
Female ferrets die if they do not mate once they go into heat
A female ferret's body produces a lot of "oestrogen" when she enters to get warm; this hormone production will not stop until the ferret has mated. Long-term exposure to such high amounts of estrogen will eventually lead to aplastic anemia.
Only half a Dolphin's brain sleeps at a time
Dolphins are mammals, therefore even though they can hold their breath for incredibly extended periods of time and live in the water, they occasionally need to surface to breathe. Because of this, a dolphin's brain never completely disengages.
Blue Whales are immensely heavy
Although this may not seem weird at first, blue whales are far larger and heavier than most people realize or may imagine. The weight of three to four elephants is typically carried by an ordinary blue whale, with the whale's tongue alone bearing the weight of one elephant!
Armadillos can catch leprosy
Humans can contract leprosy, a bacterial infection that, if left untreated, can seriously harm the skin, nerves, extremities, and eyes. It can also induce numbness and make it easier for patients to contract secondary infections, which can lead to the loss of an appendage.
A Cockroach's brain is in its body
The cockroach, one of the ultimate survivors, can withstand being beheaded because, in contrast to most other animals, its brain is located inside its body. A headless cockroach will continue to tick, move around,.
Frogs have a 360° visual range
A frog's eyes are designed and positioned such that it can see everything in its immediate environment, even what is behind it. Frogs sleep with both of their eyes wide, which makes them even harder to sneak up on.