In which ONE of the following animal species does an experimental model for bladder carcinogenesis by 2-naphthylamine exist?

The answer is B. Epidemiological evidence implicated 2-naphthylamine as a potential bladder carcinogen in the aniline dye industry; only dogs and man convert the noncarcinogenic 2-naphthylamine to carcinogenic 1-hydroxy-2-naphthylamine in the kidney.

This carcinogen is concentrated in the urine and can induce urothelial tumours.