Brilliant! Get ready to laugh at ‘giant mutant spider dog’ prank

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Man’s best friend makes people run for their lives in a hilarious new video posted to YouTube.

A normally adorable pup is dressed up as a giant, hairy spider terrorizing unsuspecting victims on dark sidewalks and street corners.

Dramatic sound effects make the pranks even funnier.

The video has gotten over 4.7 million views.