The internet loves dogs. It's only natural that millions of dog memes exist. But in the past few years, a certain odd-looking image of a dog has been gaining traction online. So, where did this suspicious-looking dog come from, and why has his strange facial expression turned him into a meme? Here's everything you need to know.

What Is the Side Eye Dog, and What Does It Mean?

In 2015, Redditor /u/gooddboyy posted the first known image of the dog to /r/aww, captioned, "A ride in the car, huh? Are you sure it’s not a ride in the car…to the vet?" The image appeared in memes in the following years but gained more attention around 2021. He's now become a widespread face in the sus dog meme genre.

The "Side Eye Dog" is a dog with his eyes looking suspiciously at the viewer through some serious side-eye. He also has one ear inside out, so he looks a little suspicious himself. He might give the illusion that he's peering into one's soul, judging the meme's viewers for their past misdeeds.

How Is The Side Eye Dog Used In Memes?

Side Eye Dog is not the first side-eyeing meme character out there; his predecessors include the infamous Side Eyeing Chloe, or even the Awkward Look Monkey Puppet. But he does give off rather different energy than the previous image macros.

The Side Eye Dog can be used in quite a few different ways. For those who miss the days of impact font, he can be used as a modern advice animal. He can also be paired with the right caption to create a good reaction image.

What Is a Sus Dog?

A sus dog is any dog that looks sus. Suspicious, that is. Any dog that looks like he's up to no good, or any dog that seems to know you're up to something, too — both dogs are sus, and the humor is usually in the face, like in the unusual, human-like expression of the Side Eye Dog.

Or maybe it refers to a dog that looks like Amogus, too.

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To learn more about Side Eye Dog, be sure to check out Know Your Meme's encyclopedia entry for more information.