Onychophorans, also known as velvet worms, are small invertebrates that are found in tropical and subtropical regions of the world. These creatures have several synonyms that describe their unique features and characteristics. One such synonym is "peripatus," which refers to the animal's elongated body and numerous, short legs. Another synonym for onychophorans is "velvet worm," which describes the soft and velvety texture of their skin. Onychophorans are also commonly referred to as "walking sausages," due to their cylindrical shape and the way they move on their numerous legs. Lastly, these creatures are sometimes called "rainspider," as they are often seen during or after rainfall.