This is the amusing moment a Taiwanese model was groped by a notorious orangutan while posing for pictures at a zoo in Thailand.

Adult actress Yumi K was on a swing while her friends watched as the playful simian surprised her by grabbing her breasts from behind and kissing her.

Yumi calmly carried on with the pictorial and picked up the orangutan which flashed a cheeky grin at the camera.

The OnlyFans model said the encounter was one of the highlights of her trip to Thailand.

She wrote online: 'The orangutan is so cute, so smart, smells good, has fluffy fur, and is wearing a cute diaper!'

The orangutan lives in an enclosure at the Safari World zoo, and has learned to kiss and grope female tourists with encouragement from his handlers and visitors.

However, questions have been raised about the use of the orangutan to perform its hallmark stunt with animal rights groups such as PETA complaining that he is being 'exploited and humiliated'.