Rats, Bio-Fresh, Rattus norvegicus, Pack of 10

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Rats are similar in price to fetal pigs, but have adult musculature. If you desire a mammal specimen that is inexpensive, fully muscled and has well-developed genitalia, the rat is the specimen of choice. Pregnant rats are also available.Order InfoINJECTION KEYPlain: Circulatory system not injected with colors.Single: Arteries injected with red latex.Double: Arteries red, veins blue.Triple: Arteries red, veins blue and hepatic portal veins yellow.