Alright, I added some items to my pet this morning and deleted them off after school but they are still on the pet. It's been almost an hour. If you click on the pet, they aren't there but they show up on it. I dunno if it's just beind slow or what.
It just takes the computer some time to load changed pictures because when you load the same pages/pictures, your computer pulls up past photos that were there. That is why hard refreshing makes items appear. It forces the computer to reload the picture.