"What made me take the pictures was seeing his body," he said. "Seeing every bone. The bones under his skin. You could see his hip bones sticking out clearly under his skin."
Dennee says the tag on the exhibit read $1,299.
His photos of the kitten, named Cleo, exploded on social media, circulating hundreds of times around the globe - and sparking an investigation by the Ontario Society for the Prevention of Cruelty to Animals (OSPCA).
"It is an ongoing investigation," Alison Cross, a spokesperson for the organization, told The Dodo. "So I can't speak to any of the details. I can tell you that we are making sure she's getting the care she requires."
But the store selling the kitten denies the kitten was for sale. Amy Young, a spokesman for the store, told The Dodo that Cleo was the victim of animal cruelty - but it wasn't at the hands of the pet store.
Cleo was, in fact, rescued.
She had been stolen from the store on December 20. A day later, police found her in a home with 11 other cats.
"She was then taken to the vet to see how she was recovering from this ordeal," Young said. "We needed to rule out if she has contracted any illness from the home she had been in.
"The vet had given her a clean bill of health. She has lost weight, but that was due to the stress of the situation."