In prehistoric times, the Earth was crawling with several giant versions ... After reading about the mega penguins, dive into the story of the megalodon, the largest shark ever to exist.

The giant penguin is thought to have stood around 5 feet 10 inches tall, which would have allowed it to stare many humans right in the eye, and it weighed a whopping 220 pounds when grown.

The scientists nicknamed the penguin “Pedro” The fossil of a giant penguin that lived 36 million years ago has been discovered in Peru. Scientists say the find shows that key features of the ...