Parachuting Pooch

This story features a great photo of a military bomb-sniffing dog jumping out of a plane with his handler:

"They don't perceive height difference the same way humans do, so that doesn't worry them. They're more likely to be bothered by the roar of the engines, but once we're on the way down, that doesn't matter and they just enjoy the view."

I'm skeptical about the height-perception claim. I think they perceive it just like we do - at normal ranges. You don't see dogs jumping off cliffs to their deaths.

I think the issue is that at 10,000 feet you don't really perceive the distance with your eyes. You just conceive of it mathematically with your mind.

The dog has superior power of smell,
but doesn't do math so well.