Chiang Mai, Thailand, 19.07.2025
Dogs bought during the COVID-19 lockdown in the UK show high rates of problem behaviour—especially when trained using aversive methods like physical punishment.
A new study sheds light on the long-term effects of pandemic-era puppy purchases. Researchers from the UK followed 985 “Pandemic Puppies”—dogs acquired during the COVID-19 lockdown—and found that 96.7% showed at least one problem behaviour by 21 months of age. Nearly one third exhibited separation-related issues.
The study, published in Animals, analyzed how early-life experiences, owner background, and training methods affected adult dog behaviour. A key finding: owners who used multiple aversive training techniques, such as physical punishment, reported more behaviour problems.
This population also showed a high use of aversive methods (82.3%)—a rate notably higher than in past studies. Conversely, online puppy classes were identified as the sole protective factor against the use of such methods.
Interestingly, nearly one third of participants underestimated the difficulty of dog training. This misconception was more common among first-time dog owners.
The authors call for urgent educational interventions to promote humane training methods and support emotional well-being in dogs—helping prevent potential relinquishment or behavioural euthanasia.
Impacts of Puppy Early Life Experiences, Puppy-Purchasing Practices, and Owner Characteristics on Owner-Reported Problem Behaviours in a UK Pandemic Puppies Cohort at 21 Months of Age
