[Snake lover 3-25]

my snakes poop in their water dish too!!! but they never seem to poop anywhere else in their cage... just in the water... it makes for easy cleenup... it's like they are litter box trained!!! anyone know why they do it? it's gotten so bad that i've had to put a larger water dish that they dont poop in in the cage... so my problem's basically solved but i just wonder why sometimes... maybe they enjoy having a cleaner cage???