Fauna include musk oxen, Arctic wolves, Arctic foxes, Arctic hares, and lemmings. Grizzly bears occasionally prey on small mammals, such as marmots, ground squirrels, lemmings, and voles. Included are mice, rats, gerbils, hamsters, lemmings, and voles. They have also been found to prey on lemmings, caribou, Arctic foxes, birds, and beetles. It includes true hamsters, voles, lemmings, and New World rats and mice. The Arvicolinae are a subfamily of rodents that includes the voles, lemmings, and muskrats. Vole species form the subfamily Arvicolinae with the lemmings and the muskrats. These cycles are also reflected in the populations of animals who prey on the lemmings. Numerous clones of "Lemmings" were made. In 1991, a puzzle-platform video game called Lemmings was released. Misconceptions about lemmings go back many centuries. Belushi also reprised his Lemmings imitation of Joe Cocker. In 1994, "PC Gamer US" named "Lemmings" the 30th-best computer game ever. Jones created "Lemmings" and "Grand Theft Auto", which both spawned many successful sequels. The diet of a family of lemmings consists mostly of Saliceae.