BackgroundThe prevention of dog bites is an increasingly important public health topic, as the incidence of serious injury continues to rise.ObjectivesTo evaluate the effectiveness of interventions to prevent dog bites and aggression.MethodsOnline databases were searched (PubMed, Cochrane Library, Embase and Google Scholar), using the search terms: dog/s, canine, canis, kuri, bite/s, bitten, aggression, attack, death, fatal, mortality, injury/ies, prevention, intervention, for studies between 1960 and 2021. All study designs were considered. Outcomes of interest were the incidence of dog bites or dog aggression. Non-English studies, and those without full-text access were excluded.ResultsForty-three studies met the review criteria, including 15 observational and 27 interventional studies. Fifteen studies investigating dog-control legislation, including leash laws, stray dog control and infringements indicated this can reduce dog bite rates. Breed-specific legislation had less of an effect. Six studies investigating sterilisation, showed while this may reduce dog bites through a reduction in the dog population, the effect on dog aggression was unclear. An alcohol reduction programme showed a significant reduction in dog bite rates in one study. Seven studies assessing educational approaches found that intensive adult-directed education may be effective, with one study showing child-directed education was not effective. Eight studies on dog training (two police-dog related), and six evaluating dog medication or diet were generally low quality and inconclusive.ConclusionsMultiple strategies including effective engagement with indigenous communities and organisations will be required to reduce dog-bites and other incidents involving dog aggression. This review provides some evidence that legislated dog control strategies reduce dog bite rates. Available evidence suggests greater restrictions should be made for all dogs, rather than based on breed alone. Due to a burden of child injury, protection of children should be a focus of legislation and further investigations. Prevention strategies in children require redirection away from a focus on child-directed education and future research should investigate the effectiveness of engineering barriers and reporting strategies.

Objectives(1) To explore the relationship between regionally implemented dog control strategies and dog bite injuries (DBIs) and (2) to evaluate current implementation of dog control strategies.MethodsObservational study using a nationwide online survey of territorial authorities (TAs). Domains of interest included complaints for attacks on people, dog population, primary and secondary prevention strategies, resourcing and perspectives of current strategies. Quantitative variables were compared with DBI Accident Compensation Corporation (ACC) claims by region from 2014 to 2018.ResultsTwo-thirds of TAs (70%; n=47/67) responded to the survey. No clear relationship was observed between DBIs and: registered dog population, proportion sterilisations or microchipping, classifications due to dog behaviour, or existing limited resourcing. Legislated breeds and infringements for failure to control a dog or non-registration were higher in areas with greater DBIs. Educational messages varied widely and were predominantly victim directed (67%; n=71/106). Complaints for dog attacks on people were lower than DBIs in most areas, with no formal cross-agency notification policies. Few prosecutions or dog destruction orders were made.ConclusionsRegional inequity in DBIs could not be explained by differences in the registered dog population or dog control strategies. Minimal and inequitable resourcing exists to implement current dog control strategies and provide owner-directed education. Gaps in legislation include environmental barrier requirements for all dogs (leash/muzzle use, adequate fencing), notification of incidents and child protection. Partnership with the Indigenous community (Māori) and other community groups will be required to implement these measures successfully.

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