How big do Bolognese dogs get?

Bologneses are extra-small dogs who typically reach between four to 13 pounds when fully grown and measure 10 to 12 inches at the shoulder. They reach their mature size at about 10 months old. 

Compared to similar breeds, the Bolognese has a lighter max weight but is comparable in height to the Bichon Frise, Havanese, and Coton de Tulear. They are heavier and taller than the Maltese.