Shaping Your Puppy’s Future: Understanding Adjustable vs. Stable Temperament Traits

When we talk about puppy temperaments, it’s important to understand that some traits are more malleable, influenced by environment and training (“adjustable”), while others are more deeply ingrained (“stable”). Knowing…

Ara HugheyAra HugheyCertified Tier II Puppy Evaluator

Jun 13, 2025
A small, fluffy Shih Tzu puppy wearing a string of white pearls sits against a white background, tongue out slightly and a pink flower on its ear. A Divine Pups logo appears in the top left corner.

From the Divine Pups blog

When we talk about puppy temperaments, it’s important to understand that some traits are more malleable, influenced by environment and training (“adjustable”), while others are more deeply ingrained (“stable”). Knowing this distinction helps set realistic expectations and tailor your approach to raising a well-adjusted dog. Let’s look at the 12 traits we evaluate and categorize them:

Adjustable Traits (We Have a Hand On):

These are the traits where our interactions, training, and environment during a puppy’s critical developmental period (roughly up to 16 weeks) can have a significant impact.

  • Confidence: As you mentioned, confidence is an unstable trait where humans play a crucial role. Positive experiences, successful challenges, and a supportive environment build confidence, while over-coddling or rescuing at every sign of hesitation can hinder it.
  • Sound Sensitivity: Early and consistent positive exposure to a variety of sounds, especially during the critical period when their ears open, can significantly reduce sound sensitivity. Creating positive associations with noises is key.
  • Sight Sensitivity: Similar to sound sensitivity, a puppy’s reaction to movement can be influenced by positive exposure and building trust. Helping them recover quickly from startling visual stimuli through reassurance and positive reinforcement is essential.
  • Touch Tolerance (Enjoyment Aspect): While compliance to touch is largely established through early handling, the enjoyment of touch can be fostered through positive and gentle interactions. Creating positive associations with being handled can turn tolerance into genuine affection.
  • Motivation Level: While a puppy may have a natural inclination towards certain motivators (food, toys, praise), we can certainly shape and enhance their overall motivation to work with humans through positive reinforcement and finding what truly drives them.

Stable Traits (Innate Traits That Will Not Change):

These traits have a stronger genetic component and are less likely to be fundamentally altered by environment or training. Our focus with these traits is on understanding them and managing them appropriately within a given lifestyle.

  • Assertiveness: While training can teach a dog polite behaviors, the underlying tendency to be assertive or less so is generally considered a stable aspect of their personality. We focus on matching assertive puppies with owners who are comfortable setting boundaries.
  • Energy Level: This is largely determined by breed and genetics. While exercise and mental stimulation can manage energy levels, a naturally high-energy dog will always require more activity than a low-energy one.
  • Nerve Strength (Threshold): While we can help a dog cope with stress and build resilience, the point at which they reach their stress threshold is generally considered stable. Understanding this threshold helps owners avoid overwhelming their dog.
  • Prey Drive: This instinctual drive to chase moving objects has a strong genetic basis. While training can help manage how this drive is expressed, the underlying instinct is unlikely to disappear.
  • Human Focus: This trait describes a puppy’s inherent tendency to orient towards and engage with different aspects of their world. It’s a relatively stable characteristic that influences where their attention naturally gravitates, independent of the bond they may form with their human family. 
  • Tender Hearted: A puppy’s inherent sensitivity and how easily they are affected by corrections is a more stable trait. Owners of tender-hearted dogs need to use gentle and positive training methods.
  • Motivation Level: This trait reflects a puppy’s inherent drive and enthusiasm for engaging in tasks and working collaboratively with humans

Key Takeaway:

Understanding which traits are adjustable and which are stable is crucial for both breeders and potential owners. For adjustable traits, early and consistent positive experiences are key to shaping a well-adjusted dog. For stable traits, the focus shifts to recognizing and managing these innate tendencies and ensuring a good match between the puppy’s inherent personality and the owner’s lifestyle and expectations. This knowledge empowers you to provide the right environment and training to help your puppy thrive!

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Ara Hughey

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Ara Hughey

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Ara Hughey

Ara raises Shih Tzus in Houston, Texas, and writes about temperament, development and the small daily things that make a good match. Every puppy is born with a divine purpose.

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