Our Katrina, the one we adopted a few years ago, doesn't cover her poop either. In fact, she doesn't even bother to dig
She just gets in the box, goes and walks out. Is that thanks or what
All my others are very good, but 2 of my Pixie Bobs will drive you crazy in the middle of the night. They will dig and dig and dig as if they are trying to dig to China. But they always cover. Interesting thing about Amber. She doesn't use her front paws to dig. She gets in the box, and kicks with her back feet. She then covers with her front. Cats, you gotta love them