The viral sensation of the week isn’t a cute cat or a kid saying things beyond his years. Instead, it’s a giant mutant spider, although it is far more innocent than you might imagine.

In the video posted by Polish prankster SA Wardega, people walk up innocently to doors or elevators, only to find what looks like a giant spider in their way. Two women are particularly shocked to find a body laying on an elevator floor with the giant spider on top of it.

However, when the spider scampers out to follow the people, it is pretty obvious that only four legs are moving instead of eight. That’s because it’s actually a dog wearing an intricate costume designed by Wardega.

Wardega explained to Today.com that he got the idea for the prank after seeing another YouTube user pull a similar prank on his wife. For his prank, Wardega took it another step, shocking total strangers.

“Preparation for the film began a few months ago: I found a cheap faux fur and I carried it to the seamstress. I told her the idea, but the first results were not satisfactory," the YouTube veteran explained. "We changed the costume three times and finally managed to create something light and good-looking."

The video was only posted on Thursday, but has already garnered over 5.8 million views.

image: YouTube screenshot/SA Wardega