Hi!
I am so confused with Bella's behavior

. she is one year old and fully trained and in the past two weeks she started pooping in the house when I leave, even if its for 10-15 minutes and then eats it! (and she already pooped outside). She knows that she did something wrong because she hides when I come back.
I know that she is a "food lover" and I started to think if maybe she does it just for the "food"?!?
P.S - I give her enough food as she is not my first and only yorkie.
what can it be then?