He Thought It Was A Giant Beaver Struggling In The Muddy Waters But Soon Found Out The Truth

They Used To Be Giant

As this species evolved, the original flat tail also became the part of them. The beavers in the Ice Age, known as Castoroides were really big and looked pretty much similar to modern descendants but were much, much bigger. According to the scientists they grew up to 8 feet long and weighed around 200 pounds and lived semi-aquatic life.