How Common Is Fear in Dogs? What Owners of 43,517 Dogs Reported
In a US survey of 43,517 dogs, owners rated 91% as at least mildly fearful in one situation. Nearly half were wary of unfamiliar dogs.
Written by thecanineledger
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If your dog’s fear is new, sudden or getting worse, or comes with aggression, book a vet appointment. Pain and illness can cause fearful behaviour.
Our note: This advice is ours. The paper reports how common fear is and gives no owner advice.
→ Reading Your Dog’s Stress Signals
In a survey of owners of 43,517 US dogs, 91% of dogs were rated at least mildly fearful in one of nine everyday situations (Beaver, Veterinary Research Communications 2026). Only three dogs were rated extremely fearful in all nine.
While that figure sounds alarming, it counts any mild sign in any one situation. A dog that dislikes baths counts the same as a dog that hides from every visitor.
1. The study
The dogs. The data come from the Dog Aging Project, a large US study of pet dogs. The author used owners’ answers from 2022.
The questions. Owners rated their dog’s recent fear in nine situations on a scale from 0 (no fear) to 4 (extreme fear). The situations covered unfamiliar people, unfamiliar dogs, noises, objects, new situations, nail clipping and baths. The study counted a rating of 2 or more as fearful.
Funding. The author declares no funding for the paper. The Dog Aging Project is funded by a US government health research grant, plus other grants and donations. No competing interests are declared.
2. What owners reported
| Situation | Dogs rated at least mildly fearful |
|---|---|
| Unfamiliar people | about 22% |
| Unfamiliar dogs | about 47% |
| Loud noises | about 43% |
| Nail clipping | about 37% |
| Baths | about 23% |
Without grooming. Leaving out nail clipping and baths, 84% of dogs were still rated fearful in at least one situation.
Extreme noise fear. About one dog in ten was rated extremely afraid of loud noises. The author calls this “a level at which the problem becomes difficult to treat”.
Our note: The paper doesn’t say when noise fear needs professional help.
→ Fireworks and Thunder Fear: What the Medication Trials Found
→ Nail Trimming: Which Dogs Need It Most, and Why So Many Hate It
3. Fear isn’t always a problem
Owners differ. The author notes that “not all owners consider a behavior to be problematic even at an extreme or severe level”. Some fear is also a fair response to the situation.
Mixed motives. The author says fear of unfamiliar people and dogs probably has more than one cause.
Our note: We don’t draw a line between normal caution and a fear problem.
4. What the study can’t tell you
Only owners rated. No vet or behaviourist assessed the dogs.
Missing behaviours. Signs of separation anxiety and fear-based aggression sit in other parts of the questionnaire, so this study didn’t count them.
Small slips. The abstract puts fear of noises, objects or new situations at about 26%. But the results show about 56% of dogs were fearful on at least one of those three questions. The text also gives nail-clipping fear as 35.2%, while the table works out to about 37%.
Our note: We use the table figures, not the text or abstract.
5. What we could not verify
| Commonly said | What we found |
|---|---|
| “Most dogs aren’t fearful” | Depends on the bar. Most were rated at least mildly fearful in one situation, but few were extreme in many. |
| “Fear of strangers is the most common fear” | No. Fear of unfamiliar dogs and loud noises was about twice as common. |
| “Fearful dogs are easy to spot” | Not shown. Owners rated their own dogs, and the paper says owners judge fear differently. |
Sources
- Beaver BV. Owner-reported prevalence and severity of fear and anxiety in dogs. Vet Res Commun 2026. ⚠️ survey, Dog Aging Project owner ratings, 43,517 US dogs. No funding for the paper; the dataset is US government-funded
Always confirm with your vet before acting on anything on this page.