A kitten called Basil has melted viewers' hearts on social media after her owner shared a clip of her clearly proving her loyalty.

The heartwarming clip, shared on TikTok on Saturday, under the username @basilbaby90, shows the white-and-gray cat tapping on the glass door while her owner is locked outside, as if trying to help her back in.

A caption reads: "I'm currently locked out of our apartment and Basil is going absolutely nuts trying to help me get back in. I don't know who's more stressed out me or her." It is followed by: "If only she could unlock the door."

Cats are very smart creatures; in fact, their brain structure is about 90 percent similar to that of humans, and their intelligence is comparable to that of a 2-year-old child.

BondVet says that cats have complex brains that enable them to solve problems, remember past events, and understand human emotions.

The website adds that cats have excellent short- and long-term memories, and they can learn through observation, such as ringing bells or opening doors. They also recognize their names.

Some of the smartest breeds include Bengals, Siamese, and Abyssinians, but individual intelligence varies.

Moreover, cats are smart enough to make their own decisions, and aren't as easily influenced by social rewards as their canine counterparts.

The video quickly went viral on social media, getting viewers from across TikTok. It has so far received over 1.3 million views and more than 376,000 likes on the platform.

One user, Chris D'Andrea, commented: "She was a locksmith in another life."

Actually_a_lion posted: "Best advice I ever got from a locksmith, zipbag and bury a spare. When you're locked out, you won't mind digging a few inches."

Krissy added: "At least shes trying my cat would have laid there gleefully."

Another user, Baby Rooby, commented: "I was locked out before and my cat was howling at the door lol [laugh out loud] it was pitiful."

Madeleine wrote: "She's helping bc [because] she knows it's almost dinner time (it's no where near dinner time)."

Lex posted: "I locked myself out a couple weeks ago and could hear my cats crying because I couldnt get in."

Newsweek reached out to @basilbaby90 for comment via TikTok comments. We could not verify the details of the case.

Do you have funny and adorable videos or pictures of your pet you want to share? Send them to life@newsweek.com with some details about your best friend, and they could appear in our Pet of the Week lineup.