I don't remember the disappearance of Etan Patz in 1979. I would have been in high school at that time. This case seems strange. The Police suspected the babysitter's boy friend. Jose Ramos (a convicted child-molester). Ramos was never charged criminally for the disappearance of Etan, and denies being involved, but in 2004, a civil judge found him responsible for Etan's death.

http://www.usatoday.com/news/nation/story/2012-04-23/etan-patz-basement-dig-search/54495056/1

Now 33 years later they have another suspect Pedro Hernandez who the Police claim implicated himself. The Police used a cadaver dog to search a vacant lot where they boy would have walked on his way to the buss stop. The dog supposedly picked up a scent, but no remains were found.

story

How can a dog pick up a 33 year old scent? How can a dog tell the difference between a child's 33 year-old remains and the remains of a dead mouse.

I do not remember the name. I just remember his his photos on the milk jugs I can not imagine what this would be like for his parents.

As for the cadaver dogs, Animals have strange senses that it will take a lot longer for us to understand, but the training of the dog plays a huge part on what the Animal can identify as remains and how long the remains have been decomposing.

If the guy's responsible, let justice be served. Let's also hope he had nothing to do with other crimes.