'Tis the season to be a total jerk if you're a cat. Oh wait, that's ALL YEAR ROUND.

SEE ALSO: Upside down Christmas trees are trending, and the internet is outraged

People on Twitter have been sharing images of their feline pals clambering into their Christmas trees.

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Christmas cat knows when you are sleeping, he knows when you're awake. He knows this because he's trying to work out when you're at your most vulnerable so he can put a dead mouse on, or in, your mouth.

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Thank you and good night.

[H/T Twitter moments]

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