At least among humpback whales. A new study says larger females attract bigger crowds of eager males with lovin on their minds.
Why? Apart from any media-fueled bias, the big mommas have bigger babies with a better chance to survive. So a male has a better chance of passing on the family genes if he mates with a big female.
Female humpback whales can attract anywhere from 2 to 20 males into their harem, and the males will fight off intruders that hope to break into the group. This means that the biggest females travel with a fairly nasty retinue.