Dogs are considered a puppy till they turn one year old. After that, your dog is not a puppy anymore. But they will still keep growing. You can train your dogs at any age, but it is wiser to start teaching them from an early age. AKC (American Kennel Club) says that ”Veterinarians, veterinary technicians, animal behaviorists and many trainers now recommend that puppies (who do not have health problems) begin classes as early as 7-8 weeks.”
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