Harrowing footage shows an apparently underweight elephant performing tricks inside an empty zoo.
The adult female elephant with long white tusks was performing in front of a virtually deserted stand at a crocodile farm attraction.
With its bones visible, the "cow" can be seen balancing on two wooden tables before being led down and then walking across a metal tightrope.
It pauses in the middle, turns around and walks back.
The skeletal frame of the Asian elephant - with its pelvis and shoulder poking through its saggy leathery skin - raised concerns from one visitor who was attending the Samutprakarn Crocodile Farm and Zoo.
The filmer, who wished to remain anonymous, said: ''I've been visiting the zoo for a long time because I like to look at the animals.
But when I visited last week I was upset when I saw one of the elephants.
The elephant looked so thin and weak.
I felt so sorry for him.
I think he needs help.
I don't want to say anything bad about the zoo, because they might be problems and cannot afford to look after the elephant.
I would like people to help the elephant.'' A spokesman for the zoo said that all the elephants are ''good.'' They said: ''The elephants here are all healthy.
They are all good.
None of them are thin.
They are all fed well.
They do shows every day.''