Researchers at Eötvös Loránd University report that head shape, body size and owner treatment together influence the behaviour of short‑nosed dog breeds, based on questionnaire data from about 5,000 animals. This specific head shape, known as brachycephalic, is strongly linked to various health challenges, including breathing difficulties, eye and skin diseases, heat intolerance, and an increased risk of conditions like brachycephalic obstructive airway syndrome (BOAS).

The findings, published in the journal Animals, examined common traits among short‑nosed dogs — including French Bulldogs and Pugs — and argue that a mix of anatomy and rearing practices helps explain differences in trainability and social responses. The study also notes that these breeds are often prone to health complications, which can further impact their overall well-being. How does the head shape of short-nosed dog breeds affect their overall health?

The research team used owner questionnaires collected in Germany to relate personality and problem behaviours to physical and environmental factors. The study concluded that some behavioural patterns align directly with head shape, while others reflect body size and how owners treat their pets. Common behavioural issues include reduced trainability, reluctance to come when called, and overreactivity to house guests, problems often linked more to small body size and owner habits than to head shape alone.

“We found that the low trainability of short‑nosed dogs is mainly due to their small body size and lack of training—not their head shape,” said Borbála Turcsán, a member of the MTA‑ELTE Momentum Companion Animal Research Group. Dog owners can promote positive behavior in these breeds by providing consistent, reward-based training and avoiding indulgent practices that may hinder their development. What can dog owners do to promote positive behavior in short-nosed breeds?

Turcsán also highlighted characteristics tied to skull form. “Calmness, boldness, and poor recall response are all traits specific to short‑headed dogs,” she said, describing behaviours that remained significant after accounting for background factors.

Enikő Kubinyi, head of the Department of Ethology at Eötvös Loránd University, pointed to neurological differences that may underlie behaviour. “The brains of short‑nosed dogs are more rounded, and their patterns of brain activity differ from those of other breeds,” Kubinyi said.

The authors reported that many short‑nosed pets are treated in ways that can mask or amplify innate tendencies: they are often spoiled and less frequently trained, the study notes, which helps explain why some breeds appear less responsive to commands. Such treatment patterns are crucial in understanding their behavioural profiles.

Those same breeds also face well‑documented health challenges that intersect with behaviour. Short‑nosed dogs suffer from breathing difficulties, allergies, and skin or eye issues, a pattern the researchers cited when discussing how physical condition can alter activity and responsiveness. The study’s findings underscore the importance of a holistic approach to breed management that considers both health and behaviour.

The research draws on data linking physical measurements and owner reports; a summary of the study’s methods and implications is available via Neuroscience News, and additional analysis appears at New Atlas.

For practitioners and owners, the study reframes questions about breed behaviour by separating the effects of skull shape from those of size and training. The authors emphasised that some traits trace to anatomy while others follow from how dogs are kept and socialised. This deeper understanding can aid in promoting better health and well-being among short-nosed breeds.

The paper was carried out under the auspices of Eötvös Loránd University and published in the journal Animals, adding empirical detail to ongoing discussions about the welfare and management of short‑nosed breeds.

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Original reporting: view the original article.