After appearing to struggle, he manages to prop his back legs up behind him, taking a few faltering steps forward until he can reach a piece of food on the ground. Every few seconds, he looks up from his pit at the faces of tourists looking down at him.
The video was posted on Wednesday by ORPAK Kruševac, which appears to be an animal welfare group, though it's unclear when the video was taken. Little else is known about the bear or his condition.
"It's clear just from that video that that polar bear has sustained some sort of injury or some sort of muscle atrophy that's making it hard to even stand," Adam Roberts, CEO of Born Free USA, told The Dodo. "That also means there's going to be pain when that animal tries to stand, or walk, or even, ultimately, lie down."
The clip is reminiscent of Arturo, the only captive polar bear in Argentina who was deemed one of the world's saddest animals. Kept entirely alone at nearly 30 years old in the up to 100-degree weather, he slowly went "insane." Visitors observed him displaying repetitive stereotypic behaviors to cope with the stress, such as swinging his head back and forth over and over again. He passed away earlier this month despite a years-long effort to save him.