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Unwanted behaviour common in dogs, varies between breeds: Study
Various unwanted behaviour traits in dogs like fearfulness and aggressive behaviour often occur simultaneously, depending on the breed, according to a...
Various unwanted behaviour traits in dogs like fearfulness and aggressive behaviour often occur simultaneously, depending on the breed, according to a study which may lead to early interventions for comorbid conditions in the canines.
Researchers, including Hannes Lohi from the University of Helsinki in Finland, used an owner-reported survey to examine seven anxiety-like traits and problematic behaviours in 13,700 Finnish pet dogs. Their findings, published in the journal Scientific Reports, suggested that noise sensitivity is the most common anxiety trait, followed by fear.
"We discovered an interesting connection between impulsivity, compulsive behaviour and separation anxiety. In humans, obsessive-compulsive disorder (OCD) often occurs together with attention deficit and hyperactivity disorder (ADHD), but this is the first time the same has been seen in dogs," said Milla Salonen, study co-author from the University of Helsinki.
The scientists found that 72.5 per cent of the dogs showed problematic behaviours such as aggression and fearfulness. Noise sensitivity was the most common anxiety with 32 per cent of dogs found to be fearful of at least one noise, and 26 per cent of the canines being afraid of fireworks, specifically.
The researchers added that fear was the second most common anxiety, found in 29 per cent of dogs, including fear of other dogs (17 per cent), fear of strangers (15 per cent), and fear of new situations (11 per cent). They said noise sensitivity -- especially fear of thunder -- increased with age, along with fear of heights and surfaces, such as walking on metal grids or shiny floors.
According to the study, younger dogs more often damaged or urinated on items when left alone, and were also more often inattentive, hyperactive, or impulsive and chased their tails more than older dogs. Male dogs, the study said, were more often aggressive and hyperactive or impulsive than female dogs, which were more often fearful. The scientists also reported differences between breeds.
"Problems appear to be quite breed-specific. For example, in Border Collies we observed more compulsive staring and light or shadow chasing -- behaviours that occurred more rarely in all other breeds," Lohi said. Lagotto Romano, Wheaten Terrier and mixed breeds were the most noise sensitive, according to the study, while Spanish Water Dogs, Shetland Dogs, and mixed breeds were the most fearful.
About 11 per cent of Miniature Schnauzers were aggressive towards strangers, compared to 0.4 per cent of Labrador Retrievers, the scientists wrote in the study.
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