Some looking to make a quick buck are willing to go so far as to adopt a dog in need and sell it to the highest online bidder.
Animal experts are calling the concept "dog-flipping" and say the cruel practice of adopting a free pup only to turn around and sell it is on the rise, WMC reports.
These "dog-flippers" are posing as feasible adopters, but then go on to just pack them in at home with the other pooches they're looking to sell.
"There are some predatory people out there who will take your dog in, say they are going to give it a good home," animal rescuer Sarah Clinton told WMC, "and then turn around and sell that dog for $50, $60, a couple of hundred dollars."
But activists and pet owners are catching on to the trend and are working to put a stop to it.
Though Amy Cannon couldn't afford her dog's litter of nine puppies, she spent hundreds of dollars to have them vaccinated and she extensively screened the potential adopters she met on Craigslist and Facebook, according to HLN.
But when the Ohio woman saw that one of the puppies she gave away was posted for sale on Craigslist for $60, she was horrified and immediately rescued him.
Cannon hopes to protect other dogs from similar fates with her Facebook awareness page -- Citizens Against Flipping Dogs, according to WMC.
"I don't think a lot of people in this country have even heard about something like this," Cannon told HLN. "It's one of those hush-hush things."