A dog in a small apartment needs what a dog in a house needs: somewhere to sleep, somewhere to eat, a place for the toys and a routine for going out. The difference is that every one of them shares a room with you.
Dog crate furniture ideas turns the crate into an end table, dog area ideas for the living room carves out a zone without walls, and dog nook ideas uses the dead space in closets, hallways and under the stairs. For the daily logistics, see apartment dog potty ideas and dog walk station ideas for the entryway.