Wolves are mammals of the family Wolveridae in the order Mustelales. More than 1 meter in length; Shoulder height is about 60 centimeters; Wide mouth fissure with canine teeth; The parenting bag opens backwards; Tail length, gradually becoming thinner, straight without bending; The whole body is covered with short hair, dense and thick. The most important difference from wolves is that they belong to the marsupial group, where females have a very shallow, backward opening pouch on their abdomen with two pairs of nipples inside. Due to its tiger like markings, it is also known as the Tasmanian tiger. It was once widely distributed on the Australian continent, inhabiting open forests, grasslands, and gravel. They mostly live in gravel during the day and go out to hunt at night, often hunting alone or as a family.