Do dogs get depressed...seriously.?

we moved about 1.5 months ago to our studio apt with barely any room or furniture and before that we were in a den sized room for about 2 months in a house with two other roommates and a bunch of animals. before that we were in a nice sized 1 bedroom apt with lots of furniture for a year and a year before that we were in a 2 bedroom apt for a year. we've definitely downsized because of money and the crappy economy. we're saving up for a bigger and better place but my terrier always looks sad. she has a canine buddy and they play alot. is the move and the drastic space and furniture upsetting my dog? i mean, i have to put hot water in her food or feed her wet food or she just won't eat. will it get better after we're in a bigger apt with a view of the outside. i think that b/c she can't see outside she is also getting upset about that. i don't know what to do. i have bought them treats and toys and i switch dogfoods b/c she is a finicky eater to begin with, but it is tough.