Held in their parents' arms, Princess Charlotte and Prince George take a closer look at a balloon artist at work Photo by Reuters/Jonathan Hayward

The grounds of Government House were transformed into a petting zoo and an idyllic playground for a Royal play date with Princess Charlotte and Prince George.

The young royals clearly enjoyed themselves petting sheep, rabbits and miniature horses that were in a white picket fence enclosure.

Charlotte was clearly enthralled with the pastel coloured balloon archway. She batted and hugged the balloons. She also petted and sat on Moose, a Golden retriever-poodle cross dog, that works as a cancer therapy dog.

George spent much of the party at a bubble blowing table with his father. At one point he held a squirt gun that shot out bubbles while William waved bubble wand creating huge bubbles.

The family, William, Kate, Charlotte and George also gathered around a balloon-maker who twisted out animal shapes for the Royal children. George held one of the balloons.

The Cambridges todaaaaaay!!!❤️💛 #RoyalVisitCanada #princewilliam #katemiddleton #princegeorge #princesscharlotte

A post shared by HRH The Duchess of Cambridge (@katemiddletonnn) on

George and Charlotte enjoying their play date with children from military families. Paul Kilshaw, the balloon maker, said that Charlotte asked for a flower to be made, probably because all the other little girls were asking for one. "At first George wasn't interested in getting one until Charlotte was getting one, then he was right over." At first he was given a spider which made him laugh as he pushed it in his dad's face. Paul said, "George especially asked for a volcano and was very proud to tell me all about volcanoes. When I started with the orange flames he was pleased to tell me, 'And that's lava!''. When asked if Charlotte has a miniature pony to sit on at home, George replied 'Not yet.' Mirror's Victoria Murphy spoke to a family who met the royals. 'One of the guests, a little girl called Brielle, three, from Victoria, was delighted to meet Charlotte. Her mum Andrea, a charity volunteer, said: “Charlotte was chewing on her fingers so I asked if she was teething and yes, it’s very normal. She talked about bath time and how she [Charlotte] is always hungry." Charlotte seemed more besotted by the balloons than anything else. At one point she found a girl holding a yellow ballon and reached out for it but the girl pulled it behind her back. #RoyalVisitCanada

A post shared by Catherine Duchess Of Cambridge (@katemidleton) on