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Much like how long-time couples end up looking like brother and sister, dogs and dog owners often end up looking alike too. It’s not coincidence and there’s science to stand behind it!

Sadahiko Nakajima, a researcher and psychologist at Japan’s Kwansei Gakuin University, studies this phenomenon in-depth and found evidence to support why dogs resemble their human parent(s).

Nakajima’s 2009 experiment took place to see if strangers were able to match dogs to their owners. conducted an experiment back in 2009 to see if strangers were able to match up dogs and their owners. Participants correctly matched the duos with 80% accuracy, going off nothing but a photograph.

According to Simple Most, Nakajima recently created another, more in-depth study. They state, “He created another experiment to test if specific facial features were key to correctly matching dogs and owners.”

Nakajima isolated various facial features and ran several tests. He discovered that without the eyes being visible, accuracy fell to that of random guessing (around 50% accuracy). The eyes were the giveaway to which dog belonged with which human!

Different researches identified owners as being responsible for their dogs looking like them. People choose dogs that look similar to them, on a subconscious level.

So, if you see a dog and his/her owner looking like doppelgangers, now you know the two biggest reasons why!

Now we know all these Instagrammers aren’t crazy – it’s science!

What do you think? Do YOU have a dog look-alike? Drop a picture in the comments!