Why not keeping them outside your base?

I'm aware there may be mistland creatures able to kill them, however, a pack of Lox is quite strong enough to deal with lots of problems.

I've seen my 5 Lox attack and kill most of the wolves during a "you are hunted" event I experienced at the plains.

The only Lox which seem to move back to the place they spawn were the two parents I tamed to start with. After removing those two, their off spring didn't move far from my base, making it a lot easier for me to build a plains base without defences.

So perhaps it's a better idea to leave them free roaming as some sort of mobile defense instead of locking them up and being forced to repair their damage once every X days.

Thorin :)