In August 2011, hundreds of cats were rescued during a hoarding case, and then a team of veterinary students volunteered their time to spay and neuter the cats in order to prepare them for adoption.
A photo of this mass spaying/neutering event (named Operation Cat Nip) ran in the Gainesville Sun
But about a year later that same photo began appearing on Twitter
, stripped of any explanatory context, and accompanied by the caption: "Retweet if you say NO to animal testing."
The photo also had a watermark added, "Cause Animale Nord,"which is the name of a French animal welfare society
Thousands of people obediently retweeted the photo, many of them adding messages expressing their disgust and disapproval, unaware that the photo had nothing to do with animal testing.
Like many viral photo fakes, this one has gone through cycles of being debunked, disappearing for a while, and then suddenly resurging in popularity. Right now, it's again in a popular phase