The Family Peripatidae is a group of arthropods commonly referred to as velvet worms. These creatures are often found in tropical regions and are known for their soft, velvety appearance. While the term "Family Peripatidae" is the scientific name for this group, there are several synonyms that are commonly used to refer to velvet worms. These include onychophorans, walking worms, and velvet slugs. Regardless of the name used, these creatures are fascinating to observe and study, as they are capable of using adhesive secretions to ensnare their prey and are unique in their mix of arthropod and annelid characteristics.