Take on Porn Sniffing Dogs

It wasn't a digital trail that got that fat dude from Subway but a stack of old fashioned playboys or in his case Tiger Beat. I get that police work is intricate and difficult and the NSA probably has a bigger file on each of us than we probably have of ourselves t but who would have thought that they now have dogs that can smell out porn. We have now gotten past the phase of artificial intelligence and I'm starting to freak the F out. I have to wonder how this even works, does the dog intrinsically know when instead of typing www.YouT...and type www.YouP....? Or is this more obvious like a that dogs can smell semen on glossy paper? Either way I am hiding a bunch of Z-Bones dog biscuits around my house.