UK – This cat in the UK shows the world that sometimes something as small as a wave can make all the difference.

Isn't it interesting how excited we get when animals act like people?

In a viral Twitter video, Sox the cat sits quietly by a window on an otherwise dreary day.

Suddenly, somebody walks by the window, and Sox starts waving at the passerby like crazy!

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It definitely looks like he's waving as he sits up on his haunches and waves his left paw in a friendly greeting.

When the human pauses for a moment and waves back at the cat, Sox is overcome with excitement. He waves first his left, then his right paw, until his friend disappears from view.

The short clip has already received more than 100,000 views.

The user who shared the video said he wants to bring joy to people with the short clip. "Maybe it will give someone a smile on a bad day," the post reads.

Reading through the enthusiastic comments, it seems he has succeeded.