When most of what you see comes from images, it can be difficult to grasp the true scale of things. Put simply—can you really know how big something is if you’ve never seen it in person?

Our perception of size can often be misleading, but thanks to the internet and images that provide scale, we can finally see things as they truly are.

Here are photos that will make you question your own eyes.

Tiny baby

This sugar glider is unbelievably tiny—so tiny that its tail is actually longer than its entire body!