I fostered three pot bellied pigs that had been dumped by their owners till they were placed in adoptive homes.
One was nearly the size of a Golden Retriever but weighed a lot more. He had a nasty attitude and refused to be housebroken, often deliberately urinating as soon as he got inside. Naturally we gave him outside quarters.
The other two were smaller- about the height of a medium sized dog and both were skittish and needed a lot of patience to get them to let me pet them.
They are very very smart. They can be housebroken.
They are very social and need attention and they are unintentionally destructive by nature. An example of the latter was when I came home from work to find that they had pushed out the locking panel on the dog door and gotten in the house.
When I came in I startled them and both tried to exit the dog door at the same time in such a panic that the door cracked and needed replacement. The damage to the house from their time inside unsupervised was:
The couch had been “rooted” across the room knocking over an antique marble top table cracking the marble in two. The pantry had been nuzzled open and the new bag of dog food was torn open, scattered everywhere along with the dried pasta. A dried flower arrangement was eaten and scattered.
As I said it was not intentional but they are very strong and very smart.
On a cute side they can be great little companions.