I honestly think it has nothing to do with dominance. Most of my dominate cats do cover. Either the cat covers or it doesn't. You can't change the way they do it As long as the cat is using the pan, its more important then to worry about if they cover or not.
Using the pellets, they don't really cover much till it breaks down and then they cover in a pile in the corner till I sift it
My kitties are crazy in the litter boxes. Many times they will scratch the side of the litter box or the wall tryin to cover their mess. Most of the time it gets covered but there are times when they go potty and just jump out. Cats are so weird! I think maybe they don't like tryin to cover it bc of other messes in the litter box. I clean out my litter boxes daily (literally I have 5 cats and 3 boxes) but I think they just don't want to get their paws dirty. Even when it is a brand new clean box they wont try and cover it at times, I think out of habit.
My boy doesn't cover, but it's because he's scratching at the high walls of his litter box to cover stuff instead of moving the litter. I've tried swapping litters to see if it's a texture thing, but nope he's just weird. I guess I should just be happy that he never has "accidents" outside the box.
Interesting thread! I've been wondering about this whole thing since I got my three kittens last week. They are pretty inconsistent...though they usually try to cover their poo (thank goodness...'cause it's still a little stinky from their diarrhea! http://www.thecatsite.com/forums/sho...d.php?t=168503), but they don't seem to care about the tinkle so much. I just hope they'll learn how to dig without always stepping in their poo first! That seems to be a talent they lack!
BTW--I'm learning that it is very challenging to type with one hand while holding a sleeping kitty in the other...