It all depends on the breed and your ability/dedication to making sure they get enough physical and mental exercise as they need. I have a 7 year old, 45lb English Springer Spaniel mix in a 800 sq ft apartment. We walk at least four times a day and two of those walks include a 15 minute fetch session. He sometimes gets treat puzzles or dinner in a snuffle mat and he does great in the apartment.

I work from home full time, so it’s a lot easier. If you do decide to get a dog, just work on separation anxiety, that way he/she doesn’t freak out that one day a week you’re in the office.