Designer Crossbreeds Show More Behavioral Issues, Study Finds

A comprehensive new study published in PLOS One has challenged popular assumptions about designer crossbreed dogs.

“They were sold as the best of both worlds — easy to train, low-shedding, and wonderfully even-tempered”

Altitudes Magazine

The research revealed that these increasingly popular pets often exhibit more behavioral problems than their purebred progenitor breeds.

Altitudes Magazine

Researchers from the Royal Veterinary College analyzed survey data from 9,402 U.K. dog owners across three designer breeds.

They used the Canine Behavioural Assessment and Research Questionnaire (C-BARQ), a well-established tool for analyzing dog behaviors.

The study comes at a time when designer dogs, particularly 'doodles,' generate over $1 billion annually in sales worldwide.

This popularity is driven by marketing promises that crossbreeding combines the best traits of different breeds.

The study's findings reveal that designer crossbreeds often fail to live up to their reputation for superior behavior.

Statistical analysis showed that in 44.4% of behavioral comparisons, crossbreeds had more undesirable behaviors than their purebred progenitor breeds.

BBC

Only 9.7% of comparisons showed crossbreeds with fewer problem behaviors.

No notable difference was found in 45.8% of cases.

These results directly contradict widespread marketing claims that designer dogs inherit the best characteristics of both parent breeds without potential downsides.

The Royal Veterinary College researchers stated plainly that these dogs 'do not always behave as expected, particularly regarding training, anxiety and agitation.'

Among the studied breeds, cockapoos emerged as having the most behavioral issues.

“In a new, survey-based study of three kinds of "designer" crossbreed dogs, cocakpoos, cavapoos and labradoodles, all three showed more undesirable behaviors than at least one of their purebred progenitor breeds, with cockapoos displaying the most unwanted habits”

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They scored worse than their progenitor breeds in 16 out of 24 behavioral comparisons.

These problematic traits included owner-directed aggression, stranger-directed aggression, and excitability.

Cavapoos also showed significant behavioral challenges, performing worse than their progenitors in 11 out of 24 behaviors.

Particularly problematic areas included excitability, separation problems, and dog-directed fear.

Labradoodles presented a more mixed picture, scoring worse in five behaviors but better in six.

Labradoodles showed less owner- or dog-directed aggression than purebred poodles.

The researchers noted separation anxiety was a notable concern across all doodle breeds studied.

Separation anxiety causes serious distress for dogs and owners and is frequently cited as a reason dogs are surrendered to shelters.

The growing popularity of designer dogs like cockapoos—one of the U.K.'s most-searched dog breeds—has been fueled by marketing promises.

Labradoodles were originally bred with assistance dog work in mind.

Phys.org

The promise combines a poodle's intelligence and low-shedding coat with the temperament of another beloved breed.

However, the research suggests that crossbreeding doesn't work like a simple formula.

Genetic complexity of mixing breeds can produce unpredictable behavioral outcomes.

The study's authors emphasize findings should not discourage responsible breeding.

They encourage wider awareness of potential crossbreed behavior issues to support dog welfare.

This would enable safe, rewarding dog ownership.

Authors call for additional research to deepen understanding of crossbreed dog behavior.

This would help potential owners make more informed decisions.