Short answer: Adult dogs sleep 12-14 hours per day, puppies and seniors 18-20 hours, on a polyphasic schedule (lots of short naps). This is normal – dogs are crepuscular and their wakeful periods are intense. Sudden lethargy, sleeping in new spots, or new restlessness can signal illness.
What you should actually do
- Adult dog sleep: 12-14 hours/day. Puppies and seniors: 18-20 hours/day. Working dogs: 8-10 hours.
- Polyphasic: lots of 15-30 minute naps rather than one consolidated block – reflects ancestral predator vigilance.
- Only about 10% of dog sleep is REM (vs 25% in humans) – this is when paws twitch, eyes move, and they ‘dream.’
- Sudden lethargy or sleeping more than usual = vet visit, especially with off food, vomiting, or weight loss.
- Restless sleep or pacing at night in seniors can indicate canine cognitive dysfunction (CCDS).
Sleep architecture explains why dogs seem to ‘sleep all day’ but bounce up to play – they cycle through brief deep sleep states quickly. A dog that sleeps soundly for 4 hours without changing position is unusual and worth noting.
A useful rule: a healthy adult dog should be roughly as energetic as they were a month ago. Any clear decrease in playfulness, eagerness to walk, or appetite is something to mention to your vet, especially in dogs older than 7.
Dig deeper
⚕️ Medical Disclaimer
The information on this page is intended for educational purposes only and does not replace a hands-on veterinary examination. Drug doses depend on your dog’s complete clinical picture, concurrent medications, and the exact product formulation. Always confirm dosing with your veterinarian before administering any medication, and contact a 24-hour veterinary emergency service or animal poison control immediately if you suspect a medication overdose or adverse reaction. Editorial standards: every drug dose published on PuppaDogs is cross-checked against multiple authoritative veterinary references and reviewed by PuppaDogs Veterinary Editorial Team before publication.
