How many hours a day do dogs sleep?

Adult dogs typically sleep 12–14 hours daily, plus rest periods. Puppies need 18–20 hours. Senior dogs often sleep more than adults. Breed, activity level, and environment all affect sleep time.

Is it normal for puppies to sleep all day?

Yes. Puppies grow rapidly and need 18–20 hours of sleep including naps. Short bursts of play followed by deep sleep are normal. Worry if a puppy is lethargic when awake or refuses food.

Why is my dog sleeping more than usual?

Increased sleep can signal illness, pain, hypothyroidism, anaemia, infection, or medication effects. Sudden changes — especially with appetite loss, vomiting, or reluctance to walk — need a vet check.

Should I wake my dog from deep sleep?

Usually no. Dogs need uninterrupted rest. Wake gently only if necessary — for medication or before a vet visit. Startling a sleeping dog can cause defensive snapping.

Dog Health

Why Do Dogs Sleep So Much UK

Quick answer

**UK dogs sleep far more than humans — often 12–14 hours for adults and 18–20 for puppies.** Extra sleep is usually normal. See your vet if sleep increases suddenly alongside appetite loss, pain, weakness, or behaviour changes when awake.

Key takeaways

Adult dogs typically sleep 12–14 hours daily, plus rest periods. Puppies need 18–20 hours. Senior dogs often sleep more than adults. Breed, activity level, and environment all affect sleep time.
Yes. Puppies grow rapidly and need 18–20 hours of sleep including naps. Short bursts of play followed by deep sleep are normal. Worry if a puppy is lethargic when awake or refuses food.
Increased sleep can signal illness, pain, hypothyroidism, anaemia, infection, or medication effects. Sudden changes — especially with appetite loss, vomiting, or reluctance to walk — need a vet check.

The full picture

Causes, home monitoring, treatment options and the exact signs that mean call your vet — in the complete guide.

Read the full guide Check symptoms

Frequently Asked Questions

How many hours a day do dogs sleep?: Adult dogs typically sleep 12–14 hours daily, plus rest periods. Puppies need 18–20 hours. Senior dogs often sleep more than adults. Breed, activity level, and environment all affect sleep time.
Is it normal for puppies to sleep all day?: Yes. Puppies grow rapidly and need 18–20 hours of sleep including naps. Short bursts of play followed by deep sleep are normal. Worry if a puppy is lethargic when awake or refuses food.
Why is my dog sleeping more than usual?: Increased sleep can signal illness, pain, hypothyroidism, anaemia, infection, or medication effects. Sudden changes — especially with appetite loss, vomiting, or reluctance to walk — need a vet check.
Should I wake my dog from deep sleep?: Usually no. Dogs need uninterrupted rest. Wake gently only if necessary — for medication or before a vet visit. Startling a sleeping dog can cause defensive snapping.

Reviewed 2026-06-25 against UK veterinary guidance · Information only — not a substitute for seeing your vet.