I dont why i did not think of this breed before , i totally forgot the Chihuahua, depending on breeding of course. My Mums Chihuahua can go ALL day, he had more than an hour at the park running, playing and swimming tonight then came home and went strait for his ball to play even more.
With early training (Positive training for sensitive little dogs ) they are VERY obedient, Theo is the most well behaved dog i know.
And they are cute .