You may have never actually questioned what the inside of a kangaroo pouch looks like. Similar to Destin Sandlin, creator and host of the popular YouTube science series Smarter Every Day, I’d always thought the pouch would be like a pocket attached to a kangaroo.

A recent episode from Smarter Every Day delves into the mysteries of the kangaroo pouch, where joeys nestle in to feed, eat and sleep for an average of 46 weeks before leaving.

“This is my logic: Females have nipples and feed babies. Female kangaroos have pouches and hold joeys,” says Sandlin in the video. “I have nipples and I don’t feed babies. Therefore, it’s possible that male kangaroos have pouches but don’t hold joeys.”

Sound reasoning but, as Sandlin unfortunately later finds out, it’s so very wrong.

Check out this video from Smarter Every Day as Sandlin journeys to Australia to find out what the inside of a kangaroo pouch actually looks like.

[H/T: Huffington Post]