Separating puppies from their mother and littermates too early (before 8 to 10 weeks of age) often leads to serious behavioural problems.
Including anxiety, aggression, excessive barking, separation anxiety and a lack of bite inhibition. They miss out on crucial socialisation, which can lead to lifelong difficulties in coping with stress and interacting with other dogs.
Key consequences in detail:
Behavioural disorders:
Puppies separated too early (often before 60 days) are more prone to anxiety, nervousness when out on walks and possessive behaviour (food guarding).
Lack of socialisation:
The mother dog teaches puppies important social rules between the 6th and 8th week. Without this, dogs do not learn to react appropriately to other dogs, which often leads to aggression.
Problems with bite inhibition:
Siblings teach each other how hard they are allowed to bite. This control is often not learnt if separation occurs too early.
Increased susceptibility to stress:
The mother regulates the puppies’ hormone balance. Without her, stress hormones (vasopressin) remain high, making the dogs permanently nervous, anxious and difficult to calm.
Separation anxiety & destructiveness:
The early loss of a secure base often means that the dogs are later unable to be left alone and develop behaviours such as destroying objects or constant howling.
Health problems: The immense psychological stress can weaken the immune system and lead to physical problems such as chronic diarrhoea.
Experts even recommend weaning from 10 to 12 weeks of age for optimal social development.