I believe the answer is 5-7 years old.
Up to this point, the ability to store long-term memory has started to develop. This stage is very crucial for most parents because if the children does not receive proper accommodation during this period, it would be very likely that the children will grow up with learning disabilities.
Answer:
They tilt their heads to work around their interfering muzzles and improve their visual perspective. That cute head tilt actually broadens the range of vision and allows a dog to more clearly see a person’s face. Seeing our facial expressions improves communication.
C........................ Hope this helps!
