What animals have more than 5 legs?

Nearly every animal in the phylum Arthropoda which is also in the class Insecta. Most, but not all, insects live on land.

There are millions of species of insects living on land. As of today, their diversity confounds the abilities of phylogenists (scientists who classify life forms) to name them all as fast as they are discovered.

Generally speaking, Insects are the six-legged animals that live on land.