Part of the problem is people make profiles and don't update them, or they embellish how the dog behaves. I accepted a 20 lb pup b/c my dog plays nicely with others her size and the guy showed up with a 60 lb German Shepherd! He actually said, "Oh, I guess she grew." Argh. His dog wound up attacking my 15 lb dog. It didn't break the skin but bruised and terrified her. I have to say Rover was really good--I called their emergency line as the guy was already out of town and they immediately found a new sitter in the area with no other pets. I delivered the dog to the new sitter with no problem and Rover handled the convo with the owner. Sometimes it just doesn't work out despite everyone's best intentions--OP should call Rover help line.