
I have a four month old pup that seems to drink and wee for a pastime, yet if confined, say visiting or in the car can hold on perfectly well for a couple of hours yet in the kitchen has been known to pee every 10 minutes (or so it seems).
She doesn't yet ask obviously enough to go out, so I am up and down letting her out at regular intervals, and often find I am too late, though she has been better in last few days, and then has a day or so of being miss piddly pants.
With her it is most often due to playing and getting wound up, tanking up and then sprinkling.
I have also had pups learn to ask out and only pretend to wee or just do a tiny one, all they really wanted was to go outside for a nosey, or better still have the door left open!