The new survey also shows those that own rodents as pets are most faithful.
People who like cats are more likely to cheat on their partners.
Dating website Illicit.Encounters.com has investigated 1,000 its members and what pets they own.
It showed rabbit owners (17%) are also likely to play away from home - while people with a pet snake come third on the most likely to cheat list (15%).
There's no truth in the term 'love rat' though. People who keep rodents and gerbils don't feature on the list and dog owners are said to be the most loyal of all.