Ever since John Wick came back to the Continental to figure out where the people who stole his car, and killed his new puppy only a few days after his wife, Helen passed away from illness, he swears he can feel someone watching him, wherever he goes. He can't explain what exactly it is, but he just knows he's being watched.
From the Red Circle, to the safe house where Viggo's son, Iosef was, to where he was tied up, Marcus's house, and then, his facedown against Viggo. When he broke into the dog shelter to sloppily clean up the stab wound in his abdomen. When he stole the one gray pit bull. He didn't make it very far. He collapsed, blacking out with the leash in hand.
John finally woke to the smell of hash browns, coffee, and bacon. When his eyes opened, he couldn't recognize where he was. He was on a bed. A king sized bed. He was lying right in the middle of it. No one else was in the room with him. His weapons were gone. He was wearing a plain white T-shirt and sweatpants, something he wasn't wearing when he blacked out the night before. Light filtered in through the open curtains on the other side of the room. The dog he took last night sat beside the bed, staring up at him. The leash was off him.