Puppy Development Fear Periods. We now know that the first fear period peaks at 8 weeks. Veterinary behaviorists, this first fear period takes place between the ages of 8 to 10 weeks.
They are dependent on their mother or another heat source to keep them warm. Growth and development continues into the adolescent phase, beginning at 5 to 6 months and extending up until your pup is 18 months old. Most people realize that puppies have a fear period, however are unaware that there are actually up to 4 recognised fear periods.
This second fear period is also at the time many owners are.
The fear can be of. It’s so useful for guardians to know that this stage is temporary and that it is completely normal. This second fear period is also at the time many owners are. Fear periods are times during which puppies become more sensitive to a variety of external stimuli.