Class Onychophora refers to a group of invertebrate animals that are commonly known as velvet worms. They are predominantly found in forests, caves, and other damp habitats. Although they look like worms and have no legs, they possess several tiny, unjointed legs that help them move. Some synonyms for the Class Onychophora include velvet worms, onychophorans, and peripatus. Velvet worms live singly or in small groups and are predators that use their sticky slime to catch insects and other prey. Despite their simple appearance, they possess complex digestive, respiratory, and nervous systems, making them fascinating creatures to study.