Rangel Family Goldens

Understanding Puppy Temperament: What Matters Most

Many families ask whether we temperament test our puppies — and it’s a great question. For years, temperament testing was considered the “responsible” thing to do. Breeders, service‑dog programs, and even military working‑dog programs relied on these tests to predict which puppies would excel in certain roles.

After raising many litters, studying the research, and watching how puppies develop, I made an intentional decision:

I chose not to include temperament testing in my program because the science does not support its accuracy.

Instead of relying on a one‑time test at 7–8 weeks, I focus on what truly shapes a dog’s long‑term temperament: genetics, environment, training, and daily experiences.

Why Early Temperament Tests Don’t Tell the Whole Story

Puppies are still developing basic senses in their early weeks:
- Vision becomes clear around 4–5 weeks
- Hearing develops around the same time
- They cannot potty on their own until about 3 weeks

So when a puppy goes home at 7–10 weeks, they’ve only been fully aware of the world for a very short time. Expecting a personality test at this age to predict adult temperament simply isn’t realistic.

Just like children, puppies are shaped by their environment. Calm homes tend to produce calmer dogs; busy, high‑energy homes produce high‑energy dogs.

Research suggests:
- 35% of temperament is inherited
- 65% is shaped by environment, training, and daily life

Owners have enormous influence over who their puppy becomes.

What the Research Shows

1. Michigan State University Study (2019)
A major study found that dogs’ personalities change significantly over time — just like humans. Training, daily experiences, and owner behavior all influence long‑term temperament.

2. Service‑Dog & Guide‑Dog Program Studies
- 8‑week temperament tests were no better than chance at predicting adult suitability
- Most traits seen in puppyhood did not carry into adulthood
- Fear in puppies did not predict fear in adults
- Some fearful puppies became the friendliest adults
- Prediction improves with age (6–12 months), but still isn’t perfect

3. Breed‑Specific Studies
Even when tests identified breed tendencies, they still failed to predict adult temperament.

4. What Does Matter
Studies consistently show that long‑term behavior is shaped by:
- The experience and skill of the family raising the puppy
- Having another stable dog in the home
- Avoiding traumatic or overwhelming experiences
- Positive, consistent training
- Early socialization done correctly

Environment and training matter far more than a one‑time test.

Why I Don’t Use Temperament Testing in My Program

I didn’t “stop” temperament testing — I simply never adopted it, because the evidence shows it does not reliably predict adult temperament.

Instead, I invest my time in what actually benefits the puppies:
- Building confidence
- Supporting crate comfort
- Establishing predictable routines
- Encouraging problem‑solving
- Introducing new textures, sounds, and environments
- Helping puppies become resilient, adaptable little dogs

I spend all day with my puppies — I don’t need a formal test to know who needs extra support.

What You Can Expect From Your Puppy

By the time your puppy goes home:
- They have a strong foundation
- They are used to a schedule
- They’ve begun crate comfort
- They’ve started early potty training
- They’ve been exposed to new sounds, textures, and experiences
- They’ve been raised with intention, structure, and love

Your job is to continue that foundation with patience, consistency, and positive reinforcement.

The Bottom Line

Temperament testing is a tool — but it is not a crystal ball.

A puppy’s adult temperament is shaped by:
- Training
- Socialization
- Daily experiences
- The home environment
- The people raising the puppy

These are the things that truly matter — and these are the things I choose to invest my time and energy in.

References & Footnotes

Journal Reference:

1. William J. Chopik, Jonathan R. Weaver. Old dog, new tricks: Age differences in dog personality traits, associations with human personality traits, and links to important outcomes. Journal of Research in Personality, 2019; DOI: 10.1016/j.jrp.2019.01.005

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[2] Asher L, Blythe S, Roberts R, Toothill L, Craigon PJ, et al. (2013) A standardized behavior test for potential guide dog puppies: Methods and association with subsequent success in guide dog training. J Vet Behav Clin Appl Res 8: 431–438. https://www.sciencedirect.com/science/article/pii/S1558787813001925

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[5] Goddard ME, Beilharz RG (1986) Early prediction of adult behaviour in potential guide dogs. Appl Anim Behav Sci 15: 247–260. https://www.sciencedirect.com/science/article/abs/pii/016815918690095X

[6] Beaudet R, Chalifoux A, Dallaire A (1994) Predictive value of activity level and behavioral evaluation on future dominance in puppies. Appl Anim Behav Sci 40: 273–284. https://www.sciencedirect.com/science/article/abs/pii/016815919490068X

[7] Robinson, LM, RS Thompson, JC Ha. Puppy Temperament Assessments Predict Breed and American Kennel Club Group but Not Adult Temperament. Journal of Applied Animal Welfare Science. 19:2, 2016.

[8] Scott JP, Beilfelt SW (1976) Analysis of the puppy testing program. In: Pfaffenberger, C.J., Scott, J.P., Fuller, J.L., Ginsburg, B.E., Bielfelt SW, editor. Guide Dogs for the Blind: Their Selection, Development and Training. pp. 39–75

[9] Fratkin JL, Sinn DL, Patall EA, Gosling SD. Personality consistency in dogs: a meta-analysis. PLoS One. 2013; 8(1):e54907. https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0054907

[10] Slabbert JM, Odendaal JSJ (1999) Early prediction of adult police dog efficiency - a longitudinal study. Appl Anim Behav Sci 64: 269–288. https://www.sciencedirect.com/science/article/pii/S0168159199000386

[11] Svobodova I, Vapenik P, Pinc L, Bartos L (2008) Testing German shepherd puppies to assess their chances of certification. Appl Anim Behav Sci 113: 139–149. https://www.sciencedirect.com/science/article/abs/pii/S0168159107003000

[12] Duffy DL & JA Serpell 2012 Predictive validity of a method for evaluating temperament in young guide and service dogs. App. Anim. Behav. Sci. 138: 99-109. https://linkinghub.elsevier.com/retrieve/pii/S0168159112000433

[13] Serpell JA, Duffy DL. Aspects of Juvenile and Adolescent Environment Predict Aggression and Fear in 12-Month-Old Guide Dogs. Front Vet Sci. 2016;3:49. Published 2016 Jun 22. doi:10.3389/fvets.2016.00049 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4916180/

[14] In 2003, the University of Pennsylvania developed a behavioral test called C-BARQ, which measures aggression, fearfulness, and a few other behavioral problems in dogs. C-BARQ has become a standard for certain behavioral studies and U Penn has a database with over 50,000 test results. The use of C-BARQ makes it easier to compare results among studies that use it, however, it is limited in its scope and doesn’t cover a number of qualities a breeder may want to be able to evaluate in puppies or adults. http://vetapps.vet.upenn.edu/cbarq/