Lizard's Poo

It was yesterday that i discovered some stain on the floor of my room.
It looked something like this :

Obviously it was a shit stain. Not mine though, cause i clean up my ass each time i shit. and even if i don't, why would i rub my shitty ass against the floor...
so anyway, i was trying to figure out who the culprit was.

a bird?
can't be. birds don't fly INTO my room. let alone leave their droppings.
birds ruled out.

an insect?
i don't remember seeing any insects shitting. i wonder if they do excrete. hmm.....
insects ruled out.

a lizard?
as far as i know....lizard's poo has a consistent shape. like a black rice grain with white dot at one end (refer to pic below). i think i have read it somewhere, that the white dot is the urine. dunno how true it is. so since this stain is nowhere near a lizard's poo....
lizards ruled out.


jackie?
can't be also. he doesn't even know how to climb the stairs to my room. plus, i've just cleaned up his asshole. as in real cleaning up (rubbing with soap). now his asshole is clean and pink in colour, with no shit residue. hahahaha! not wanting to risk myself sounding like a psycho with a fetish for dog's asshole...i shall stop here.
jackie ruled out too.

so this morning i asked my mom.

me : what's that stain in my room?

mom : lizard's shit la.

me : lizard's shit like that wan meh? don't have the white dot thing.

mom : aiyah, the lizard lau sai (diarrhoea) ma.

*faint*