'Game of Thrones' star Emilia Clarke shares behind the scenes video of Kit Harington

— -- The cast of HBO's hit show "Game of Thrones" know how to keep their spirits high in between takes of the dark medieval fantasy drama.

Emilia Clarke, who plays Daenerys Targaryen on the series, caught her co-star Kit Harington, who portrays the beloved Jon Snow, on camera pretending to be one of her character's dragons.

Clarke posted the hilarious clip on Instagram early Friday.

"I mean, JEEEZE, one pet of a dragon and he thinks he's one of them," she captioned the video, referencing how Harington's Snow pet one of her fire-breathing dragons -- who typically loathe anyone other than Daenerys -- in Sunday's episode.

It's good to see the “Game of Thrones” cast members smiling, especially since HBO has been under attack by hackers throughout the latest season of the series.

HBO'S CEO Richard Plepler revealed in July that the cable network had been hacked, with unreleased episodes of "Curb Your Enthusiasm," "Insecure" and "Ballers" being leaked.

"Game of Thrones" has been mostly spared, although scripts were reportedly leaked and episode four of the series was prematurely posted online in India.

HBO fired back Sunday at the hackers after their latest dump of stolen material.

A representative for HBO told ABC News in a statement, "We are not in communication with the hacker and we're not going to comment every time a new piece of information is released."

"It has been widely reported that there was a cyber incident at HBO," the statement continued. "The hacker may continue to drop bits and pieces of stolen information in an attempt to generate media attention. That's a game we're not going to participate in."