I used to have pets, including wild animals and strays, disabled with SP, OW, and Register. But since my computer upgrade nearly two years ago, I have gradually been making some changes as I find my computer can now handle them. Some time ago, I enabled deer and raccoons, and later, cats and dogs, with a 2 per household limit and a reduced total for the world. After playing in Appaloosa Plains with all animal settings at default, I am now enabling them in most worlds. However, while I see residents adopting cats and dogs, I have never seen any horse adoptions, not even in Brighton, the town I made in CAW from AP, where there are plenty of large lots with fully equipped stables. My sims are the only ones in the whole town who ever have horses. Does anyone else see residents adopting horses in your towns? Does anyone know why this might be happening? Is there any way to increase the chances of horse adoptions by residents?

Maybe enter their lots and make sure there's stables?