1. Did you know that sloths were the size of an elephant

You wouldn’t look at sloths and think that they once were huge. Imagine what kind of damage they were capable of considering their long sharp claws.

Experts say that back in the prehistoric times (the last of these species is thought to have been living 4,500 years ago) they used to be 20 feet long.

However, those mammals were quite different than the ones we know today, apparently there was a species that used to dive underwater searching for food.

2. Bugs were the size of birds

We already hate insects and some of you might be even terrified when you see them, but the times we live in now are sweeter than centuries ago when they were bigger than birds! Yes, you read that right.

 3. Gigantic sharks that could’ve eaten the sharks that we know

Also known  as the megalodon, this creature was about 50 feet long and experts say that in the present day sharks are as small as a megalodon’s p*nis.

They became extinct 2 million years ago due to the cooling waters and other predators. Some people believe they are still around though.

4. Rats as big as cats

Another creature that we are not fond of which used to be 10 times bigger than in the present. I know, just TERRIFYING!

5. Whaaat???? Snakes as big as a school bus?!

Everything in that sentence horrifies us. According to the fossils experts found, more than 50 million years ago, in the tropical jungle, these ones used to be over 40 feet long!!!