Female toads inflate to avoid sex
Found on BBC News on Tuesday, 05 January 2010
A report in the Royal Society's Biology Letters journal describes how a female cane toad inflates its body to prevent an amorous male from mating with it.
In their experiments, the scientists found that male toads were less able to maintain this grip if the female inflated its body.
"Our work now shows that females can actually manipulate the outcome of male-male competition by inflating at the right moment."
Sure takes more work than "having migrane".