Hi Mary ..... I live with my daughter who has a Bichon/Poodle mix, and since my daughter works, and I am retired, he spends a lot of time with my Golden and myself.
Harley weighs about 9.5 lbs, but thinks he is a big dog, and having lived in the house with a Berner, a Leo and the Golden, he backs down from none of them. The largest dogs did not like him from the outset, but he persevered, and finally became best buds with the Leonberger - even sleeping on top of her and sometimes sliding off.
He does not bark excessively, loves every dog he meets on our walks, and all in all, I would have to say he is an absolute joy.