when are border collies fully grown
When are Border Collies Fully Grown?: Border Collies reach maturity at around 12-18 months, but they may not be fully grown until they are 2-3 years old.
A Border Collie’s physical growth is determined by its genes, but its mental growth is determined by its environment. The more mentally stimulating the environment, the more the Border Collie will grow.Border Collies are bred to be working dogs. They were originally bred to herd sheep, so they need a lot of stimulation to keep them mentally healthy. Without enough stimulation, they may become destructive or hyperactive.Many people think that Border Collies are hyperactive by nature, but this is usually not the case. Hyperactivity is usually caused by a lack of stimulation.A well-stimulated Border Collie is a happy Border Collie.