SINGAPORE, March 3 -- A komodo dragon at the Singapore Zoo has survived an unusual medical scare after vets were forced to reach into its stomach to remove two plush toys swallowed during a burst of mischief involving local macaques.

According to Singapore-based media organisationAsiaOne, the incident was captured in a video shared by Mandai Wildlife Reserve on Instagram yesterday, where deputy vice-president of veterinary healthcare and scientific programme Dr Heng Yirui described the drama as a "peculiar case".

He said keepers first noticed macaques rifling through a sealed bag that someone had left within reach.

"The bag did not contain valuables, but there were a few stuffed toys in it, and the mischievous macaques thought it would...