I dont know if there is such a thing..but if there is my boxer sure has them! Shes used to living with another boxer and 5 people in the house. Myself, my boyfriend, the other boxer owner and another couple. We recently moved to our own apartment (me boxer and bf) and she seems to be..sad? alot. She doesnt have the same appetite as she used to *shes only 1 and a half by the way* and maybe its the lack of a backyard to run around when she wants to. We take her out at least twice a week to my boyfriends mom to run around and she gets walked twice a day. She's very spoiled..sleeps in bed with us at night and has her own corner of the couch and to many toys to count. Is she upset that we leave her alone sometimes *I have school my bf has work* shes used to someone being there with her all the time or at least another boxer. She still gets excited when we say Kia-other boxers name. Should I get her a boxer friend or will this all go away as she grows up? She just doesnt seem like her old self and im worried. Anyone have these problems with any other dog??