There is a certain species of fruit bat, called Dayak, where the males lactate for their young.
Leon Trotsky was also reputed to lactate for his young. The debate over its appropriateness supposedly caused his fall from grace. Heh. I dunno about that one.
Are you suggest, my good sir, that Trotsky was a fruit bat?
pistols at dawn.
“so if he weighs the same as a bat… then…”
“HE’S TROTSKY!!!”
sorry. somebody will be along in a minute to remind you to include a link to Cecil’s column when you post things like this, lest people poke fun where they may.
Sorry. I was referring to http://www.straightdope.com/classics/a2_321.html And I believe I should have posted there…not enough sleep, and too much inattention.
I do wonder about Trotsky, though.
I feel this could be everyone’s sig.
Maybe it should be.
Lycor appears to be correct…
The Incredible Milk-Producing Male Bat
Nothing in there about Trotsky, though.
Well, google had one cite on the amazing lactating Leon. Short but funny, and it does also reference the male bat issue, well in this case Batman.
BTW, IMHO whether or not Trotsky breast fed his children would make a great question for Cecil. 
A thousand pardons for the faulty link.
Ummmm, the original question was “Is there any mammalian species where the males breastfeed the young?”
Cecil said “no.”
While the lactating bats are all quite interesting, both of the cited articles state "Males were not observed nursing young. "
While I concede that this opens up the possibility that Cecil was wrong (which we all know just can’t be), it’s still a far cry from definitively stating such heresies…