Overweight people are more likely to have overweight dogs, partly because they are more likely to feed them treats.
This, perhaps rather obvious conclusion, was made by the scientists in study conducted at Copenhagen University published in Preventative Veterinary Medicine.
“The prevalence of heavy or obese dogs is more than twice as large among overweight or obese owners than among owners who are slim or of a normal weight.”
I would like to add that in my view another factor would be that overweight people normalise obesity. What I mean is that they consider obese people to be people of normal weight and the same applies to their perceptions of pet weight.