| Kingdom: | Animalia |
| Phylum: | Chordata |
| Subphylum: | Vertebrata |
| Class: | Mammalia |
| Order: | Rodentia |
| Suborder: | Histricomorpha |
| Family: | Caviidae |
- Genus
- species – Common Name
- Cavia
- anolaimae, aperia, fulgida, guianae, nana, porcellus, tschudii – Guinea Pig
- Dolichotis
- patagonum, salinicola – Patagonia Cavy
- Galea
- flavidens, musteloides, spixii – Yellow-tailed Cavy
- Kerodon
- rupestris – Rock Cavy
- Microcavia Microcavia
- australis, shiptoni – Mountain Cavy
- Microcavia Monticavia
- niata – Mountain Cavy
