My little Ahi pees a few times a day 3-4. Depends on how much she drinks and how hot it is. My cousins Maltese on the other hand only pees ONCE a day also.
She has a clean bill of health too. She thought it was strange as she has 2 other dogs, another Maltese and a Yorkie. They pee several times a day. But same as your baby, it's like a dam breaks when her little Cupcake goes.(yes that's her name...cute huh?hehe) You can double check with your vet if you think something is wrong. Other than that I think she may just go the once a day.
