A two-and-half-year-old male chimpanzee named Dodo has been feeding the cubs every day for more than a year at the Samut Prakarn Crocodile Farm and Zoo.
Dodo's trainers at the zoo around 25 miles south east of Bangkok in Thailand initially just wanted to challenge the chimp.
Since he showed no fear of the tiger cubs, they worked with him until he picked up the habit.
