BOLOGNESE! The Bolognese is said to be the Bichon of Italy. It is similar to the Bichon Frise,Coton de Tulear and the Havanese. At least thats what it says in my Dogs Annual 2002. For height and weight it says in my Dogs Annual this: At 5.5-9 lb. (3.5-4 kg.), the Bolognese is solid for its size of 10-12 in. (25-31 cm.)
From the picture that you have posted it looks like a Bolognese or a Bolognese mix. Research some more on the breed if you like. I hope I have been of some help!