The Giant Kangaroo Rat (Dipoomys ingens) is an endangered rodent species endemic to California. It is the largest of the kangaroo rats, measuring about 15 cm (6 in.) in length, not including its long, tufted tail. It is buffy or brown in color. Like other kangaroo rats it has a large head and large eyes, and long, strong hind legs with which it can hop at high speeds.