For something so powerful, the human brain is surprisingly easy to fool. Take a photo from just the right angle, and suddenly an ordinary scene turns into a visual puzzle that has us doing a double, triple, or maybe even quadruple-take before it finally clicks.

Below, we’ve rounded up some pictures with seriously confusing perspectives. Scroll down to check them out and have fun working out what the hell is going on in each one.

#1 Cat With A Hole Through Its Body

#2 Did A Double Take

#3 The Cat Is Explaining About The Weather

We tend to think of our eyes as tiny cameras that simply record whatever is in front of them. In reality, seeing is a lot more complicated and takes some serious teamwork.

For starters, light passes through the cornea and lens, which focus it onto the retina at the back of the eye, according to the National Eye Institute.

There, special cells called photoreceptors turn it into electrical signals that travel along the optic nerve to the brain, which pieces them together into the world we perceive.

#4 This Plastic Bag Looks Exactly Like A Cat

#5 That's A Loooooong Cat

#6 A Mother Bird Sheltering Her Children

Since the brain does all that work, it’s also the part that gets fooled by weird pictures and visual illusions. Scientists still aren’t sure exactly why this happens, but one leading theory, which researchers are still debating, is called predictive processing.

The idea, first suggested by German physicist Hermann von Helmholtz in the 1860s, is that your brain uses past experience to guess what you’re looking at.

So when you come across an odd photo, your mind instantly compares it to things you’ve seen before and lands on the most likely answer. If the picture breaks the usual rules, that answer turns out wrong, which is why it takes a second look to figure out what’s going on.

#7 Earth Or Another Planet?

#8 3D Crochet Blanket

#9 Do You See The Dinosaur?

Depth perception also plays a big role in how we see. The image that lands on the retina is flat, so the brain has to figure out how far away things are using clues like perspective lines and the size of familiar objects.

For example, when a person walks toward you, your brain understands they’re getting closer because it knows how tall people usually are. Photos can mess with this system, since the right camera angle can make near and far objects look like they’re right next to each other.

#10 Reflection In Steam Iron

#11 Bert From Sesame Street Spotted On The Street

#12 Medical Dummy Looks Like Zuckerberg

Our brains rely on these depth clues so much that even simple sketches can trick us. In the famous Ponzo illusion, two identical bars sit between slanted tracks, and the top one looks bigger because the tracks make it seem farther away.

The Müller-Lyer drawing works in a similar way, so two equal lines look like different lengths.

#13 Rope Fingers

#14 This Truck Carrying A Heavy Load

#15 Forbidden Mac And Cheese

In the 1930s, ophthalmologist Adelbert Ames Jr. built a special room, later known as the Ames room, to show how depth perception can play tricks on us. Through a peephole, it looks perfectly ordinary, but its walls are actually uneven.

Since your brain assumes the space is a regular rectangle, people inside seem to grow or shrink as they walk across it. The Lord of the Rings even used this setup to make the hobbits look tiny next to Gandalf.

#16 Forbidden Avocado

#17 My Nephew Is Half Dog Half Boy

#18 Doge With Human Legs

Lighting also plays a huge part in how we see things, and nothing proves it better than The Dress. Back in 2015, the whole internet lost its mind arguing over whether it was blue and black or white and gold. Good times.

As it turns out, there’s a simple reason everyone was so divided. The photo showed very little of the surroundings, so our brains had to fill in the lighting on their own.

According to color scientists, anyone who assumed the dress was sitting in shadow saw white and gold, while those who imagined a bright, yellowish glow saw blue and black. For the record, the second group was right.

#19

#20 This Surreal Puddle In A Parking Garage

#21 Bob Ross In My Burrito

Of course, photographers know all about these quirks and use them on purpose to create eye-catching photos. One popular example is tilt-shift photography, which keeps only a small part of the picture sharp and blurs the rest. Since we usually see that kind of blur in close-ups of tiny objects, real streets and cities suddenly look like toy models.

Double exposure is another old trick that layers two shots into one image, and it’s been around since the 1860s. Depending on how the images line up, the result can feel dreamy or downright confusing.

#22 Catdog

#23 It Looks Like There's A Dog Trapped In This Tree

#24 Crowd At A Concert

Whatever the exact science behind it turns out to be, our brains being so easy to fool means we get to have a lot of fun with it. With the right angle or a bit of lucky timing, an ordinary moment can turn into a confusing and often hilarious picture.

You can always try making your own, too, since most of these tricks don’t require any special equipment. In the meantime, see how many of the pics below you can crack on the first look.