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When does a puppy become an adult dog?

Article written by Lisa Greyson
Originally published by The South African (Mon, Oct 23, 2023)

Puppies are a bundle of joy, but they do grow up. Dog maturity has three aspects: physical, sexual, and emotional.

Puppies are a bundle of joy, but they do grow up. Most puppies become adult dogs between 1 and 2 years old. The exact timing varies for each puppy. It depends on factors like breed, size, socialization, and more.

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WHEN DO PUPPIES TURN INTO ADULTS?

Dog maturity has three aspects: physical, sexual, and emotional.

The American Animal Hospital Association (AAHA) identifies four life stages in a dog’s life.

These stages are:

  • puppy (birth to 6-9 months)
  • young adult
  • mature adult, and
  • senior (last 25% of estimated life span)

Puppyhood ends when rapid growth stops.

Young adulthood spans from the end of rapid growth to physical and social maturity (around 3-4 years).

Mature adulthood varies with size and breed but typically starts when dogs are physically and socially mature and continues until the last 25% of their estimated lifespan.

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