Multiple choice general knowledge math & puzzles At about what age does a puppy get his complete set of baby or puppy teeth? 6 months 1 month 4 months 3 months Reveal answer Fill a bubble to check yourself B Correct answer Explanation Puppies typically develop their full set of 28 deciduous (baby) teeth by the time they are about 3 to 6 weeks old, making '1 month' the most accurate approximation among the choices. Their adult teeth begin appearing around 4 months.