Jurassic World star Chris Pratt falls for dinosaur prank

American actor Chris Pratt may play a dinosaurwhispererin the box-office smashingJurassic Worldthriller, butprehistoric beasts can still make the actor jump out of his skin.

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Video posted online Mondayshows theunsuspecting movie starwalking through a hallway on his way to theBerlin premiere ofJurassic World whena very large dinosaur lunges athim from a corridor.

The 35-year-old clutches his chest with one hand while putting out his other arm to stop the attack.

A second dino, this one wearing a wig, seems to confirm to Pratt that he's the victim of a stunt, who puts up his dukes in a mock defensive stance.

"They look great," Pratt says to prank creatorSylwesterWardega, AKA SAWardega, who steps out from behind the giant costume.

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Wardega isthe sameYouTuberbehind such much-watched clips asthedisturbing "Zombie Apocalypse Halloween Prank" and"Mutant Giant Spider Dog".

"You got me, man," says Pratt, who graciouslyadmits that he, too,found the spider dog stunt"freaking awesome."

"Did you know about this?" he asks a female assistant.

"Yes. Sorry Chris," thewoman replied.