Types of miniature livestock? SMALLEST pet goat?

Micro mini pigs r the ****...i was gonna get one they get about 25-30lbs, they can be litter box traned with puppy litter, they need blankets cause they like to snuggle under em and keep warm, they dont have fur only hair so they're basically hypoallergenic. You could also get a tea cup pig there like 30-50lbs.