That's...that's pretty damn funny. And took some effort!
Only problems I see with it:
- someone might end up hurting the dog, which would obviously be bad
- the last clip, the one with all the string across the stairs, that could've caused some serious injuries depending on how fast someone tried to go through it/how tangled up they get. That guy looked like he almost took a header down the stairs getting back out. They moved it to the far end of the midway platform probably out of concern for that possibility, but...it's still an uncomfortable risk
- if someone tried this prank in Australia the local spiders might mistake the dog for one of their own and initiate an awkward one-sided mating attempt