A Chinchilla is a rodent native to the Andes mountains. Felis catus is the scientific name for a cat. The Chinchilla breed of cats is named for its plush coat which shares similarities to the Chinchilla. The Chinchilla cat is really a variant of the Persian breed of cats.
This justifies what answer for what question? Q & A:
Is a Chinchilla breed of felis catus a type of rodent?
no