A new study has found that the more intelligent and sociable the dog, the happier it will be.
Researchers at the University of Sussex looked at the happiness of dogs over a six-month period and compared it to that of the average human.
The findings were published in the journal PLoS ONE.
“The results suggest that the dogs are the most sensitive to the impact of their environment on their well-being,” the researchers said.
“This may be a general phenomenon for the social world as well.”
The researchers also found that happiness can vary depending on the age of the dog and the gender of the owner.
The study found that dogs tended to be happier with their owners at around 25 and 35 years old.
The happiest dogs were female, and those who were more sociable were younger and had fewer health issues.
But they were also happier with owners of any age, which is consistent with previous studies.