Mastodon is an extinct mammal related to elephants.

They lived in Central and North America.

They became extinct 10,000 to 11,000 years ago due to hunting by humans and predators.

Mastodons are estimated to be 2 to 3 metres tall, their bodies 5 metres long and their bodies 4 to 5 tonnes.

In the picture below, on the left is a mastodon and on the right is a woolly mammoth.

Obviously the mastodon is bigger and stronger than the woolly mammoth.