Puppy learning Because I do not have a dog salivation at the sound of the bell . But when the bell sounds to control the powder back when the dog heard a bell alone. Saliva is not secreted
The dog was born to learn, because at first the dogs do not secrete saliva when I hear a chime sound, but enough to bring Bell control after meat powder when the dog has only heard a chime sound saliva, secrete.
a dog was born to learn at first because it is not a dog saliva flow when bell, but he could hear the sound control to ground beef dog. duct when gin bell mouth-watering oversight, it rained.