Yes they do because my dad and eldes sister witnesed it fisthand. They had the oportunity to see a whitetail buck and a mulie doe breeding and it was kinda funny when they stoped the truck to watch them they laid down then when they thought all was safe they got bach up at it again but every time a vehicle went by they laid down again. To bad they did`nt have vidio cams back then. Are bucks that are crosses around here have larger racks and some have split forks and they also have shorter tails with a black streak down there chest with darker hair color and the body weights are 200lbs to 300lbs depending on the age of the deer.