Can this Pug resist the ball?

Enkei the Pug is fast approaching 2 years old and was only a couple of months old in this video. Here we are testing his patience and will power with one of his all time favourite puppy toys. These Kong balls were a perfect size for Enkeis tiny puppy mouth, he would run around and chase them for hours on end. We took Enkei to puppy training classes when he was really young, and we were taught to teach 'leave' and 'no' so that if you are ever out and about on walks and there was something that the dog would try eat that might not be good for them, leave or no command would save this hassle.
The same goes for toys! They were meant to be able to resist toys when told. Watch as we offer the ball to Enkei, realise that his training has paid off and then we decide to test how far his will power can stretch by offering the ball closer and closer to his mouth. He manages to resist so for long, he even looks like he is going to take it, then backs off again. But in the end.... can he really resist fully??