What are signs of healthy puppy development?

Published: November 26, 2025
Updated: November 26, 2025

Your puppy's development is predictable, and milestones indicate good health. Consistent progress means you are providing support to help the puppy's growth. Understanding the normal milestones enables you to spot conditions where problems can arise early. Recognizing these milestones will also enable the early identification of issues and a timely response, if needed.

Physical Development

  • Consistent weight gain matching breed standards
  • Steady improvement in coordination and movement
  • Clear eyes without discharge or redness
  • Clean ears and healthy pink gums

Behavioral Markers

  • Curiosity about new people and environments
  • Appropriate play with littermates or toys
  • Quick recovery from brief startling events
  • Consistent response to familiar voices

Physiological Signs

  • Regular appetite without meal skipping
  • Predictable elimination schedule
  • Restful sleep patterns between activities
  • Normal body temperature (100-102.5°F)
Milestone Tracking by Age
Age8 weeksHealthy SignsCoordinated walking, curious explorationWarning Indicators
Stumbling, disinterest in surroundings
Age12 weeksHealthy SignsActive play, steady weight gainWarning Indicators
Avoidance behaviors, poor growth
Age16 weeksHealthy SignsReliable appetite, learning commandsWarning Indicators
Appetite changes, regression in training
Consult your vet if warning signs persist

The size of the breed also makes a difference; your little Pomeranian will put on weight much faster than a Mastiff puppy, for example. Know what your pup's growth curve should look like. Weigh weekly using kitchen scales, and be aware that deviations of more than 10% above or below the breed standard require veterinary advice.

Mental engagement shows neurological health. Puppies should investigate new toys within seconds of being given them. They should shake it off quickly after they hear a loud noise. If a dog is not curious, or if it remains hidden for too long after something falls, that indicates that there is something going on in the brain department.

Bowel patterns indicate metabolic health. Do you move your bowels as often as you eat meals? Does the colour and firmness of your stool vary periodically? If you have vomited or had diarrhea for over twelve hours, or notice dry skin, consult your physician promptly.

Indications that action is needed. Hours of lethargy are not the same as screaming that the cat couldn't be napping. Not wanting to seek parent contact may mean they have some pain. A setback in any training, especially house training, can mean urinary infections. You should never delay discussing a concern with your veterinarian.

Read the full article: Puppy Growth Stages: Complete Development Guide

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