A beautiful gray tabby with sad eyes and sagging brows has earned himself the title of “the Internet’s saddest cat.” However, looks can be deceiving.

Just as Grumpy Cat isn't actually cranky, Luhu the sad cat is actually quite a happy kitty, according to his owner.

In fact, his permanently sorrowful expression is simply the result of surgery he had when he was a kitten.

"Luhu had eye infections when he was 2 weeks [old]," his owner, Maggie Liu, told ABC News. "He got a pretty major operation on his eyes at that time [and] the sequelae is affected by his vision, so Luhu always opens his eyes pretty hard when he needs look at something."

Luhu is now 3 years old and perfectly healthy, and he shares his Beijing home with two other tabby cats, his brothers Barher and Bardie, whom Liu describes as “very friendly cats that never fight.”

Liu started sharing photos of all three of her cats on Instagram, and she was surprised to see how quickly Luhu’s sad expression rocketed him to famous-feline status.

“I put my cats pics on Instagram just for fun, actually. I never [thought] about Luhu [getting] so popular like this.”

In the past few days, Liu has amassed more than 80,000 followers on the photo-sharing site, all thanks to her forlorn-looking feline.

"I did not have any plans for my cats so far," she said. "I wish my cats keep healthy and live with me until they are gone."

Check out some adorable photos of Luhu below.

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