(All pictures by Rex Features)
Take the tots to a nursery and you know they'll have fun... especially with log ladders to climb and old tyres to try out.
And these pandas playing so happily in their special sanctuary have more to celebrate than most.
The lucky 13 were born to mother pandas evacuated to another part of China last year when an earthquake devastated their Sichuan Province home. It was feared the trauma would put the unborn cubs in peril. But all of them are thriving.
Reserve manager Huang Tan said: "They are now a real handful - incredibly fun-loving. It is almost as if they know they had a miraculous escape."
When born last year the pandas were pink, blind and furless and weighed just 3.2oz to 4.6oz (90g to 130g). But with the help of some bottle-feeding they are now well on the way to becoming adult and have moved on to munching their favourite food... bamboo shoots.
The sanctuary is going to need a lot of that - pandas can chomp their way through 20-30lb (9-14kg) every DAY.
British volunteer Matt Cornwall, 33, said: "I'm extremely lucky to be here with them.
And all my friends want me to bring one home with me!"
Pictures: The lucky 13 panda cubs born safely after their mums survived Chinese devastation - mirror.co.uk