I am looking at getting a couple of boars and was wondering whether they can be kept as house pigs?

Could I get them a basket to sleep in rather than a hutch?

I'm intending for them to live in the house rather than the garden, they will have free reign of the garden during the day.

One other thing, do these guys tunnel?

I might have to wire mesh the grass, this was effective in my last residence when we had 7 female rabbits.

My book on guinea pigs is in the post hence my noobish questions here, just thinking ahead a little