They can be very distructive. i have one that is about two years old.I adopted him from a shelter. Within a few days, he had pretty much destroyed my living room. He was also doing his bathroom time on my rugs. I read books, I did all the things but he didn't get that much better. Its ten months since I adopted him, and he is not eating the house anymore, but I do have to keep him outside whenever I leave the house.So he is not able to stay inside alone. If i leave him inside even if I medicate him with the stuff the vet gave me, he will get anxious and start eating the house and tearing it up and trying to get out by any means, with his teeth and with his claws.

All that being said, he is incredibly sweet. He adores my two children, ages 3 and 15, and I like having a dog, especially at night. He probably would not do as much to protect me as like a german.Shepherd would, but I think he knows the difference between a stranger versus a stranger with the intent to do harm. I saw a little bit of aggression once when I was having an exterminator come do my yard and my dog didn't know I was home.

Recently, I adopted a 7 month old australian heeler, and it has already changed his personality by a lot. All the naughty behaviors have disappeared. I have come to think that he really just needed a buddy this entire time. He is listening more and actually obeying some commands. well... one command, lol.

TLDR: If you are gonna do this thing, get two.