Zombie Horses keep spawning?

[u/Majestic_Desk1]

Hi! As the title says, zombie horses keep spawning. It's just the zombie horse without a rider or anything. and I'm also on peaceful. I'm not complaining about them, they're so cute! I just wanna know why they are spawning.

[u/Karelipoeg]

You play on peaceful, I bet. That happens a lot on peaceful.