Small puppy (JRT) coming and thinking I might need a stair gate. We're in a flat - main door firs floor which means there's a flight of stairs at the end of our hallway to get down to the door. I doubt a small puppy will attempt them but thought better to be safe than sorry. Looked at the mesh hook dog gates on amazon that looked perfect, was about to order but thankfully read the reviews which were awful. A normal gate would be no good I don't think for a small puppy. Will it be able to squeeze through? Any suggestions?