We have a 80lb black lab... he has an identity crisis and thinks he is a Yorkie lol and I am so NOT joking. He is best friends with Ginger, who is 4lbs. Its so funny to watch them play together b/c he is so gentle with her and he literally lets her walk all over him. She gets him to get things out of the trash for her - so they both get into trouble lol he will literally get something out of the trash and give it to her! lol But anyway, he is great with them. I trust them alone together now so if we leave, I baby gate them all in the laundry room together. He is so funny. He even tries to fit himself in their beds! He just wants to be a lap baby like the rest of them lol I just love how he thinks he is a Yorkie and the Yorkies think they are humans lol