Well obviously he ate the better tasting half... but now I'm curious to know which half he left behind!Only half? Was he full or is he a light eater?
My Moxie loves to catch and eat flies, which get into our place during the summer. Both my cats eat spiders (for which I am EXTREMELY grateful) and most other creepy crawlies that make it into the house. It's never hurt them before, but mine do get Revolution every month. If you do decide to use a dewormer make sure you get it from your vet. I would never ever trust the stuff they sell at the grocery store.