how old do puppies have to be before they can hear
Hearing Changes. Puppies mature quite rapidly after their first two weeks. While their sight and hearing develop, their sense of smell is useful for navigation. Beau will have some rudimentary hearing around 2 or 3 weeks of age, responding to loud noises, but his ears won't have caught up with his sniffer.t will be closer to age 5 or 6 weeks before his hearing is developed enough for him to understand his name. Dog trainer Cesar Millan recommends using positive reinforcement starting between the ages of 5 and 7 weeks of age when Beau responds to his name.