Sites like PetsDating.Com and YouMustLoveDogsDating.Com have found a new niche as singles flock to computers and smartphones to find relationships, connecting dog owners to potential mates who enjoy long walks in the dog park and slobbery canine kisses as much as they do.
Many of the sites encourage users to bring their dogs on first dates to break the ice or size up canine chemistry.
Many dating sites cater to religious, cultural and political preferences, but won't focus as heavily on interests like pets, music or travel, said Karen North, a professor of social media at the University of Southern California's Annenberg School of Journalism.
When Joanie Pelzer signed up with a dog-friendly online dating service a few years ago, she was honest about her Chihuahua he likes people more than other dogs, craves attention, steals food and can't stand to ride in the backseat of a car.
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Even a man who loved animals as much as she did couldn't keep up with her dog's quirks. On their first date, her Chihuahua, Hubbell, stole the man's breakfast as they drove from New York City to Long Island. They only had one more date.
"Having a theme that is ... About one's passion makes it feel like you are looking for a needle in a smaller and far more relevant and appealing haystack," said Michal Ann Strahilevitz, a professor of marketing at Golden Gate University in San Francisco.
The founder of one of the dog-focused dating services, YouMustLoveDogsDating.Com, agreed.
But other veterans of the dating-service industry say focusing on a canine connection only adds an extra hurdle to finding love.
"When you consider how challenging it already is to find someone who offers what you are seeking in a romantic partner, and who seeks what you are offering, and where there is also mutual chemistry, and the timing is right ... You have to wonder who in their right mind would want to make it even more challenging by insisting on canine chemistry," said Trish McDermott, who spent 10 years as the dating expert and spokeswoman for Match.Com.