If your puppy is experiencing unusual tiredness, it's important to monitor their behavior closely. Puppies do require a lot of sleep, typically around 18-20 hours a day, but if you notice any of the following signs, it may be time to consult a vet:

1. **Lethargy**: If your puppy is less active than usual, not interested in play, or seems unusually sleepy, this could indicate a health issue.

2. **Changes in Appetite**: If your puppy is not eating or drinking as normal, this could be a sign of illness.

3. **Difficulty Breathing**: If you notice your puppy is having trouble breathing or is panting excessively, seek veterinary help immediately.

4. **Vomiting or Diarrhea**: Any gastrointestinal symptoms accompanying tiredness should be evaluated by a vet.

5. **Pain or Discomfort**: If your puppy is whining, whimpering, or showing signs of pain (such as limping or reluctance to move), it’s crucial to consult a vet.

6. **Fever**: If your puppy feels warm to the touch or has a temperature above 103°F (39.4°C), this could indicate an infection.

Remember, it's always better to be cautious. If you're concerned about your puppy's tiredness, don't hesitate to reach out to your veterinarian for advice and potential examination.

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Topics covered in this question:

Dog Behavior Puppy Care Puppy Health Vet Consultation Tiredness