Puppy learning Because I do not have a dog salivation at the sound of the bell . But when the bell sounds to control liver powder later on Su heard the 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 body powder liver after a chime sound is heard when the u.s only saliva, secrete.
There was a dog at first because the dog does not learn to flow mouth-watering when you hear bell, but he used to control the ground meat, bell, and when the liver duct. Ain oversight bell mouth, it rained.