Roly poly pandas hit 7 months, stealing hearts at Toronto Zoo

They could teach a lesson in cuteness.

• Twin pandas' names revealed as Jia Panpan, Jia Yueyue

The Toronto Zoo's panda cubsJia Panpan and Jia Yueyue hit their seven-month birthdays Friday and celebrated with a playdate outside.

For those in a library or other hushedoffice, you might want to avoid scrolling any further; there's some serious potential for squealing.

JiaPanpanhas about seven pounds on his twin sister, but the zoo says that doesn't keep the pair from wrestling.

The pandas got their names in March: Jia Panpan, above,means Canadian Hope...

... While Jia Yueyue means Canadian Joy.

And it looks like she's grown into her name, clowning around and playingpeekaboo through the bamboo trees. Zoo staff say that she's the more inquisitive of the pair and usually figures things out first.

Her brother follows her lead, they say. But he's still a curious little fellow and, as his climbing skills develop, he has begun exploring more of his habitat, according to his keepers.