The ringtail (Bassariscus astutus) is a mammal of the raccoon family (thus not actually a cat), native to arid regions of North America. It is also known as the ringtail cat, ring-tailed cat or miner's cat, and is also sometimes mistakenly called a "civet cat" (after similar, though unrelated, cat-like omnivores of Asia and Africa). The ringtail is sometimes called a cacomistle, though this term seems to be more often used to refer to Bassariscus sumichrasti.

The ringtail is buff to dark brown in color with white underparts and a flashy black and white striped tail that has 14-16 white and black stripes, which is longer than the rest of its body. The claws are short, straight, and semi-retractable. The eyes are large and purple, each surrounded by a patch of light fur. It is smaller than a housecat, measuring 30–42 cm long with a tail of 31–44 cm and weighing 0.8–1.5 kg. Ringtails have occasionally been hunted for their pelts, but the fur is not especially valuable.

The ringtail is found in California, Colorado, eastern Kansas, Oklahoma, Oregon, Arizona, New Mexico, southern Nevada, Texas, Utah and throughout northern and central Mexico. Its distribution overlaps that of B. sumichrasti in the Mexican states of Guerrero, Oaxaca and Veracruz. It is found in rocky, desert as its habitat, where it nests in the hollows of trees or abandoned wooden structures. The ringtail is the state mammal of Arizona. It is also found in the Great Basin Desert. The Great Basin desert covers most of Nevada and over half of Utah, as well as parts of California, Idaho, and Oregon. The ringtail prefers to live in rocky habitats associated with water. These areas can include riparian canyons, caves, and mine shafts. It can also be found in the Sonoran Desert in Arizona,US.