Slide 1 of 21
Creature trivia to share with your friends and family
There are thought to be somewhere between 5 million and 100 million species of plants and animals on Earth, but science has only identified about 2 million, according to the National Science Foundation. If we can find all the animals, there will probably be about 7.7 million species of them. That's way too many to account for here. So we dug up some of the most fascinating, little-known facts about various citizens of Kingdom Animalia. A taste of what you'll find inside:
Can cats bark? (Surprisingly, we found one that can.) And what do dogs dream about?
How high can frogs jump? (The answer will shock you.)
Do Fish Sleep? Wait till you hear the rest of the story!
Click in and read on!
Editor's Note: This article was originally published in 2011. In 2016 we updated it and added additional weird facts.
Cats can barkSlide 2 of 21
Cats can bark
Dogs bark and cats meow. Simple as that... or so you thought.
It turns out that cats have such similar anatomy to dogs that there's nothing stopping them from barking too. To turn their vocalizations doggish, all cats have to do is push air through their vocal cords with greater than normal force. According to experts, the barking cat in the video above probably learned its unusual, though not unheard of, vocal patterns from a dog co-pet. [Read more about the barking cat]Slide 3 of 21
Dogs can dreamSlide 4 of 21
Dogs can dream
First questions first: Do dogs dream? Almost surely, scientists say. Studies show that rats dream, and researchers figure the act is probably common among mammals.
So, then, about what do dogs dream?
"Dogs dream doggy things," said Stanley Coren, author of "Do Dogs Dream? Nearly Everything Your Dog Wants You to Know" (Norton, 2012), and a professor emeritus of psychology at the University of British Columbia. "So, pointers will point at dream birds, and Dobermans will chase dream burglars,” Coren told us for a story about all this.Slide 5 of 21
Frogs can jump really highSlide 6 of 21
Slide 7 of 21
Chickens can undergo natural sex changesSlide 8 of 21