About 3 months ago a cold and hungry Chihuahua showed up at my doorstep with no owner in sight. It was bout 20 degrees F outside, so I immediately let the small dog inside. We warmed him up, gave him a good meal, and he has been with me ever since. I went door to door and made postings on several social websites to try and find his owner, to no avail. So we concluded he was either sat out by some horrible person, or ran away, possibly from a bad home. Nevertheless I have grown attached and fell in love with this amazing Chi. I immediately took him to the vet, where he got a clean bill of health, and scheduled him for neutering a month later. He is a male chi, now neutered, and the vet seems to think he is approx. 3yrs. old. This is my question/ situation: Pepper loves to play with my girlfriends Chorkie ( chi and yorkie mix), and will chew on bones as long as she is around. However, when its just us ( pepper and myself) at my apartment, he just lays in my lap, or on top of the couch and naps. No toys or bones, etc., seem to interest him at all. Of course I take him for walks and play with him all I can, but when its just "us", he seems depressed. Any insightful info would be greatly appreciated!!