Dog biting at your hand when you hold out a treat? Dog gettling less exited by food as time goes on, and not more? Dog overexcited by...

A tan mix breed puppy wears a red leash and collar, and sits on the grass looking up.

A Belgian Malinois holds a yellow ball in her mouth and pulls on it against the person holding the camera.

A juvenile female Belgian Malinois sits on a green field just after dawn. A lake and mountains are visible behind her.