So, I was in the middle of having the bulls humping cows and collecting the testicles when I ran out of bullets, and ultimately had to leave the area having only collected 2/3 of the sets I needed. I’ve tried to go back 5 times and let the cows out in various ways. I can’t get the bulls and the cows to interact with each other again, no matter what I do. I’ve left the area, fast traveled to several areas before returning, and I’ve completed restarted the game, nothing worked.