I was making a pet shop in minecraft, which they can click a button, and it would give them a tamed dog. the command in the commandblock is

/summon Wolf ~0 ~-2 ~0 \{CustomName:\[" @p 's Dog"\],Owner:\[" @p "\]\}

And it doesnt work, it just spawns a sitting dog, and its name is "@p 's Dog". so i later logged onto the same world, as "@p", and I right clicked the dog, and finally it sat up. Please fix this bug!