Caviidae
Caviidae, the cavy family, is composed of rodents native to South America and includes the domestic guinea pig, wild cavies, and the largest living rodent, the capybara. They are found across South America in open areas from moist savanna to thorn forests or scrub desert. This family of rodents has fewer members than most other rodent families, with 19 species in 6 genera in 3 subfamilies.
Giant kangaroo rat
The giant kangaroo rat, is the largest of over 20 species of kangaroo rats, which are small members of the rodent family, measuring about in length, including its long, tufted tail. It is tan or brown in color. Like other kangaroo rats it has a large head and large eyes, and long, strong hind legs with which helps it hop at high speeds.