A jarvey is a magical creature from the world of Harry Potter, specifically mentioned in the Fantastic Beasts series. It resembles a small, shaggy dog and is known for its ability to speak in a limited way, often using simple phrases. Jarveys are typically found in the wild and are known for their mischievous nature. These creatures are often associated with the wizarding world and are considered to be part of the diverse magical fauna. Jarveys are not commonly kept as pets, but they can be found in some magical locations, where they may interact with wizards and witches.