By Dr Duncan Houston
Some dogs would chase the ball long after their body should have stopped. Others slow down so quietly that owners mistake discomfort for laziness.
Safe exercise leaves your dog comfortable during the activity and afterwards. Repeated stiffness, prolonged panting or reluctance means the plan needs review.
Quick Answer
Signs of too much or unsuitable exercise include limping, sore paws, slowing down, reluctance to continue and unusual fatigue after activity. Heavy panting with weakness, vomiting or confusion can signal heatstroke and needs immediate action. Adjust exercise to the individual dog's age, fitness, health and conditions rather than following a universal time limit.
What is normal recovery, and what is not?
| Observation | Response |
|---|---|
| Comfortable movement and prompt settling after a familiar outing | Continue monitoring and build fitness gradually. |
| Repeated stiffness, limping, sore pads or difficulty rising later | Reduce the activity and book a veterinary assessment. |
| Persistent heavy panting, refusal to move or marked exhaustion | Stop, move to a cool area and seek veterinary advice. |
| Collapse, confusion, vomiting with overheating or breathing difficulty | Begin appropriate first aid and seek emergency care. |
Why can a dog struggle with exercise?
A sudden increase in distance, repetitive jumping, sharp turns or rough surfaces can overload tissues. Heat and humidity increase the cooling challenge. Flat-faced dogs, overweight dogs and dogs with heart, airway or joint disease may have less reserve.
Exercise intolerance is not automatically poor fitness. Arthritis, ligament injury, anaemia, heart disease and neurological problems can make a previously manageable walk difficult. Increased thirst or urination also deserves investigation rather than being dismissed as overexercise.
When is this an emergency?
Suspect heatstroke when heavy panting accompanies weakness, confusion, vomiting, diarrhoea or collapse after heat or exertion. Move out of the heat, start cooling with water cooler than the dog and airflow, and contact an emergency clinic. Arrange transport promptly while continuing safe cooling; do not wait for all signs to resolve.
The Royal Veterinary College recommends starting cooling before transport. Do not wrap the dog in wet towels, force water into the mouth or assume a dog is safe because it was not inside a hot car.
How to adjust the routine
- Stop the activity that causes discomfort. A limp is a reason to investigate, not to push through.
- Return to a comfortable baseline after veterinary advice, then increase one aspect at a time.
- Choose cooler times and suitable surfaces. Carry water and allow voluntary breaks.
- Balance physical activity with sniffing, food-search games and short training sessions.
- Check the dog later that day and the next morning for stiffness, pad damage or unusual tiredness.
Puppies, older dogs and enthusiastic athletes
Puppies benefit from varied, age-appropriate movement, but repetitive forced running and high-impact drills need caution while developing. There is no single growth-plate deadline that applies to every breed. Senior dogs often benefit from regular controlled activity, with duration and terrain adjusted for comfort.
Highly driven dogs still need rest and training to settle. Endless ball throwing can add repeated braking and turning without providing the balanced movement or mental satisfaction they need.
Common mistakes
- Using willingness to chase as proof that more exercise is safe.
- Doing little all week, then a very long weekend hike.
- Giving pain medicine to enable a painful dog to keep working.
- Assuming all dogs need the same daily minutes.
Frequently asked questions
Should a tired dog sleep all day afterwards?
Rest is normal, but marked lethargy, pain or difficulty getting up is not a useful fitness goal.
Can walking cause heatstroke?
Yes. Exertion can trigger heat-related illness, especially in vulnerable dogs or warm conditions.
Does arthritis mean no exercise?
No. A tailored plan usually includes controlled activity, but a painful flare needs reassessment.
Further reading
See RVC heatstroke advice, research on exercise-related heat illness and AVMA heat safety guidance.
Good exercise builds capacity without borrowing comfort from tomorrow. Let recovery and health guide the plan.
ASK A VET™ supports practical health observations. A brief record of activity, weather and recovery can help your veterinarian design a safer routine.
This article is general veterinary education and does not diagnose or treat an individual animal. Always confirm medication names, doses and interactions with the veterinarian who knows your pet.
If your animal is struggling to breathe, collapsed, bleeding heavily, seizing, or has eaten something toxic, contact your vet or the nearest emergency clinic now.
Animal Poisons Helpline (AU) 1300 869 738 · Animal Poisons Helpline (NZ) 0800 869 738 · ASPCA Animal Poison Control (US) (888) 426-4435
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Ask A Vet articles are written by Dr Duncan Houston BVSc, a practising veterinarian, unless another author is named in the byline.




