My moggy is a two pouches and a big bowl of biscuits a day kinda girl. I normally buy her which ever food is on offer at the supermarket. This time I have bought her Whiskers and I am wondering if anyone knows if they use some sort of additive in it? She is constantly mewling for more and more and yesterday she ended up eating 4 pouches and still crying for more (in addition to eating her biscuits) She was like this last time she had it too and my husband made some sort of joke about it being 'cat crack' and I'm wondering if there is something in it that affects them? She has recently been wormed so I know it isnt that. Any thoughts?