I looked at him in shock and asked, "Wait, it's not your dog?" After a short convo, we headed off to our respective workplaces. Now, even more perplexed, I ponder my situation and my next step all day. When I returned home that evening, I see my landlord heading upstairs. Curious what he said? Find out and read more.
As it turns out, the pooch belongs to a girl upstairs. The dog had figured out how to flip the lock and turn the knob and get out in the morning. When the dog walker came, the dog was walked as usual but put back in the apartment afterward. While sometimes the pup let itself out again, sometimes she did not. When she did, the girl assumed the dog walker had left the dog in the hallway. However, after chatting with the dog walker, they both realized that it was the doggie all along. The landlord then headed upstairs to install a second lock, not a flip style, higher up on the door to keep the furry escape artist inside. What a funny ending!