I've been in a 650 sq ft apartment with my Corgi mix (18 lbs, 3 years old) for six months now. Before I got him everyone gave me the usual warnings: exercise needs, shedding, barking. All accurate.
But there's stuff nobody warned me about that I had to figure out the hard way. Figured this might help someone in the research phase. What are the things that surprised you about apartment life with a dog?