My cat Tiger also instinctively wakes me up at 6:30 every morning. She doesn't meow though, she makes this really loud whining noise until I get out of bed. She used to sit on the bathroom scale everytime me or my husband would shower but one day my husband fell in the shower (he's not a small fellow) and scared poor Tiger out of her wits. She doesn't even like to go in the bathroom anymore after that!!