The domestic dog has been one of the most popular working and companion animals throughout human history.

Every year, surgical tools are left in approximately 1,500 patients in the USA. Fatter patients are more prone to having a surgical tool left inside of them due to the additional amount of space in their bodies.

The fingerprints of koala bears are virtually indistinguishable from those of humans, so much so that they can be easily confused at a crime scene.

AMAZING FACTS