He’s 97% accurate if you are a polar bear.
Meet Elvis
Elvis is a two-year-old beagle who lives in Kansas City. He is also the world's foremost polar bear pregnancy test.
Orlin Wagner / AP / Via cdn.spundge.com
When a zoo thinks its female polar bear is pregnant, the zoo keepers wait for the polar bear to poop
They probably don't have to wait long...
Via en.wikipedia.org
They collect the poop and then send it to Elvis
Hopefully it doesn't come back with Return to Sender written upon it.
Via Flickr: mgsbird
Elvis gets on this box and sniffs around until he finds pregnant poop
He then stops, barks and gets a treat.