A friend of my husband's brought his 18-month old son over a while ago, who thought that the pen for the dogs was so great!! Kito being a little skittish around kids, was great with him, until he went into the pen--he just started barking at him!! The kid was hilarious though--instead of getting scared, he barked back!!!

I'm sure it was just Kai showing that that is HIS place, and he doesn't want anyone in there.