thank you to everyone who helped. i don't know how the cats got the metal clips from petco off the top of the cage but apparently either i have to find a new method to lock the top on or keep her in a seperate room. (which i would really prefer to not to have to do.) is there a better locking method for the screen hoods than the bent metal clips? i'm assuming the cats got on the cage and batted them off. or is the only real solution to keep it in a separate room