View all veterinary jobs
For the study, the team at the RVC conducted an online survey of the owners of 9,402 UK dogs to investigate the behaviour of three popular designer Doodle breeds – Cockapoo, Labradoodle and Cavapoo.
Behaviours were compared between the Doodles and their purebred parent breeds, including Cocker Spaniels; Cavalier King Charles Spaniels; Labrador Retrievers; and Toy, Miniature, and Standard Poodles.
Behaviour was assessed using the validated Canine Behavioural Assessment and Research Questionnaire (C-BARQ) which quantifies diverse behavioural challenges including aggression, fear and anxiety, separation-related behaviour and attention-seeking.
The results show that designer Doodles differed from their purebred parents in approximately 54% of behavioural comparisons.
Where differences were identified, Doodles showed more undesirable behaviours in 82% of comparisons.
Some of these common undesirable behaviours included non-social fear (e.g. fear of traffic, loud noises); separation-related problems (e.g. vocalisation and destructiveness when left alone); and excitability (e.g. strong reactions to exciting events such as walks and doorbells).
Doodles showed less undesirable behaviours in only 18% of the comparisons where a difference was identified, for example Labradoodles scored lower for dog rivalry (e.g., conflict with dogs they live with) compared to Poodles.
Considerable variation between the three individual Doodle breeds was also identified, demonstrating that designer crossbreeds should not be treated as a single, uniform group in terms of behaviour.
For example, Cockapoos displayed a higher level of undesirable behaviours compared to their purebred parent breeds, exceeding that seen in Cavapoos and Labradoodles.
In particular, Cockapoos showed higher levels of aggressive behaviours, such as owner-directed aggression and dog rivalry, than their purebred parents.
Dr Rowena Packer, Senior Lecturer in Companion Animal Behaviour and Welfare Science at the RVC and senior author of the paper, said: “Realistic expectations are key to happy dog ownership.
"When expectations and reality don’t align, both dogs and owners can struggle.
"Preconceived beliefs, such as the idea that designer-crossbreeds are naturally easy to train or are safe with children, can have serious consequences if they aren’t supported by evidence.
"Our research shows that many designer-crossbreeds do not always behave as expected, particularly regarding training, anxiety and aggression, which were more common than in their parent breeds.
"We also found that not all ‘Doodles’ are alike, with Cockapoos tending to display more undesirable behaviour compared to Labradoodles and Cavapoos, highlighting that each breed is unique.
"By providing reliable scientific data, we can help puppy buyers to make better-informed choices that support both human wellbeing and canine welfare.”
Reference