WARNING: Not for the faint-hearted - WHAT IS IT?

Last night, past midnight, I found the door of the bathroom unusually hard to close.

It was slightly out of alignment.

Mustering up enough strength, I lifted up the door a little and forced it to close.

'Hmm...strange...,' I thought to myself and suspected 'something' sandwiched.

I looked up to my left and saw a tiny tail sticking out.

WHAT IS IT?

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