The young royals fed some orphan elephants and rhinos while spending a day highlighting conservation in the country's largest national park.
Armed with large bottles of milk, William (who said he could have "spent the whole day there") and Kate fed the hungry animals who were impatient to get their meal and bellowed when they first saw rangers approaching.
ADNAN ABIDI / AFP / Getty Images
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Catching maternal Kate's attention was tiny Dunga, who is the size of a large dog. She and William soothed the animal with comforting pats as it drank from a milk bottle.
The couple were visiting the Centre for Wildlife Rehabilitation and Conservation, in the Kaziranga National Park, a UNESCO world heritage site of 310,000 square miles.