With my parents we rented a house once in Italy. There were two ponies in the garden, they just walked all over the house whenever they wanted to. There was one in the kitchen most of the time. In the early-mid 80's people just accepted whatever (as my parents did, after driving 4000Km there and back with my dad chain smoking in the car and us kids in the back not wearing seat belts). The whole experience involved breaking at least half a dozen laws & regulations.
My mom has two mini donkeys and also used to let them walk through the house.
We've got a couple of semi domestic bungarras that come through the cat door and sun in window / warm near the fire.