So I went to get a Cavalier...
And they only had a male. Since we already have a male dog, that would only be a recipe for disaster. And I'm there, talking to the people I had gotten my cat Maggie from (a vet) and they showed me this Havanese, which is a type of Bichon. She had my heart before I even held her.
And she had DH's the second she licked his hand. She is the friendliest, sweetest, coolest dog. She weighs three pounds right now, and will get to a total of 7-9 pounds (which is less than my youngest kid weighed when he was born! And less than the cat weighs right now!). I absolutely adore her.
She's already the Queen, too. The big dogs back up when she comes near them. They leave their toys for her to play with. They let her be in charge, LOL. And she weighs so little, she can hang on the Golden's tail and the Golden doesn't even realize it.
The cat is none too happy, but hopefully she'll come around. :-)