It's called the "teddy bear dog." Half shih-tzu and half bichon frise. In Canada we refer to the Shih-Tzu and Bichon Frise cross as Mollydogs instead of teddy bear dogs. I have two of them and they are wonderful.
Puppies have a tendency to eliminate in exactly the same spot over and over. When you go observe Boston puppies for sale, you might see some colors in a litter. Some Boston puppies for sale aren't purebred