Definition that contains guinea pig
- cavia type genus of the Caviidae: guinea pigs
- wild cavy South American cavy; possibly ancestral to the domestic guinea pig
- cavia porcellus South American cavy; possibly ancestral to the domestic guinea pig
- order rodentia small gnawing animals: porcupines; rats; mice; squirrels; marmots; beavers; gophers; voles; hamsters; guinea pigs; agoutis
- aperea South American cavy; possibly ancestral to the domestic guinea pig
- genus cavia type genus of the Caviidae: guinea pigs
- rodentia small gnawing animals: porcupines; rats; mice; squirrels; marmots; beavers; gophers; voles; hamsters; guinea pigs; agoutis
- bacillus anthracis a species of bacillus that causes anthrax in humans and in animals (cattle and swine and sheep and rabbits and mice and guinea pigs); can be used a bioweapon
- hystricomorpha an order of rodents including: porcupines; guinea pigs; chinchillas; etc.
- suborder hystricomorpha an order of rodents including: porcupines; guinea pigs; chinchillas; etc.