Male Rats

[jayjaybig]

We had a question on a recent lab practical and the question was: Do male rats have nipples? I answered no and the professor says the answer is yes. During our lab dissection of a male rat it DID NOT have nipples. I researched online and referenced material and everywhere I look it also states that male rats and horses do NOT have nipples. The professor has yet been able to supply me with any documentation that shows male rats in fact do have nipples. Anyone have any data or proof that male rats do or don't have nipples? Thanks in advance

[JackBean]

I would suggest to contact some mammalian expert on your local University