Despite protesters, internet campaigns and petitions, Argentina's Mendoza Zoo says its lone polar bear, Arturo, won't be moving to Canada any time soon.

29-year-old Arturo has been nicknamed the "world's saddest animal" for looking sad in his small, toasty quarters at the Argentinean zoo. Reports say Arturo often exhibits concerning behavior like baring his teeth and rocking from side to side . (Via YouTube / The Last Atom)

Winnipeg Humane Society: "He methodically does the same thing over and over and it's really an indication he's slowly going insane." (Via CBC)

According to The Daily Beast, "Experts say the depression stems from his unnaturally hot environment, lack of adequate water to cool off in, and the absence of other polar bears at the zoo."

A Winnipeg zoo has offered to house Arturo, and animal lovers all over the world called for his transfer to the cooler climate. Including at least one American politician...(Via Change.org)(ViaCare2 Petition Site)

NEWT GINGRICH: "This is very sad and he should be saved, so sign the petition." (ViaFacebook / Newt Gingrich)

Polar bears generally don't live past 30, so Arturo is likely nearing the end of his life. (Vid YouTube / Vid Hab)

One Green Planet called this reasoning "suspicious," pointing out no medical records have been provided proving Arturo is not healthy enough to be transferred. 

And Examiner says experts are saying Arturo would fare much better being transported to Canada, then living out the rest of his life in Argentina.