In order for puppies to develop emotionally, they need to experience all kinds of situations.
They need to meet many different types of people: men, women, children, pensioners, people with glasses, the more variations the better. They will also need to become familiar with all types of household sounds and street sounds: in addition, they will need to be exposed to dogs and other pets such as cats and chickens.
A poorly socialized puppy is prone to behaviour problems later in life. When put in a situation unknown and scary, its natural instinct is to defend itself. This might lead to showing aggression and biting people or other pets.
BE SURE TO SPEND SOME QUALITY TIME WITH YOUR PUP EVERY DAY.
Taken directly from the South African Veterinary Association booklet “ Your Best Friend , What you need to know” by Erna Klopper