They've already got sheep. Big ones.
[link|http://www.nationalreview.com/weekend/outdoors/outdoors-swan101301.shtml|Check it out]
Give the viagra to the male sheep and set them loose in the bunkers.
[link|http://www.angelfire.com/ca3/marlowe/index.html|http://www.angelfir...e/index.html]
Sometimes "tolerance" is just a word for not dealing with things.