Yes, there are now bulls in the game! Bulls get... umm... 'happy' and ... uh... 'hug' cows and the cows sit down and have babies. You know like how real life works :)
Every baby cow has a 1 in 6 chance of becoming a bull. This should now allow people to harvest cows for leather and meat without diminishing their herd.
Anyway, let me know how it's working out. This week being Easter I probably won't have lots of time to code, but I will be on checking for bugs and answering questions.