The Duke and Duchess of Cambridge's son was described as a feisty eight-month-old who is advanced for his age by the other impressed parents.
George waved his arms and kicked his legs in excitement when he spotted the other babies - all a similar age to the Prince - with their toys.
Dressed in a pair of £75 blue dungaree shorts by British luxury brand Rachel Riley, a white blouse and soft blue pre-walking shoes, he crawled around interacting with the other children and stealing their toys on the third day of the Duke and Duchess's tour of New Zealand and Australia.
When Kate chatted to the other parents she revealed her son was sleeping well and has moved on to solid food, while William said the best way to get over jet-lag was to sleep and distract his son.
In the plush surroundings of Wellington's Government House - the official home of the Governor General - William and Kate chatted informally with the parents of 10 babies.
Grant Collinge, 38, and Magda Gurbowicz, 35, met the royals with their baby boy. Mr Collinge said: "George is bubbly, quite feisty and he took control. He crawled to the centre of the room and he owned the place."