Real life fact:

Millipedes were among the first animals to walk on Earth. They took their first steps at least 428 million years ago, venturing onto land to eat the few simple, moss-like land plants that existed back then. By 350 million years ago, the plants had evolved into trees and the millipedes had become giants too. Biggest of all was Arthropleura. As big as a crocodile, it was the largest invertebrate ever to live on land.