I have a 5 lb yorkie and I don't think I could have a smaller one, even with a 5 lb one you have to be so careful, Stormy looks smaller and has tiny little legs. The heights they are at are very important to watch and if they are under a blanket like mine likes to do you have to watch so you don't lay on her. Even their little ribs can be squeezed to hard. And their little throats can crush too with a collar. If you feel comfortable with tiny dogs go for it