In some species, such as coho salmon and quail, weedier, less aggressive males are the top choice of females, New Scientist magazine said on Wednesday.

"People just expect the dominant guy to win. But females learn through personal experience that these males can be hurtful," according to Alex Ophir, of Canada's McMaster University in Ontario.

CNN.com - Studies: Big guys don't always get the girls - Jul. 31, 2003

Link from Misty Bell.