I have two cats. The youngest (she's 2) is constanly scraping round her food bowl, which I think means she's trying to bury it to save for later. she likes to dip in and out if the food bowl and eat little and often.
My other cat is a bit of a pig and wolfs down as much as possible in one go.
Invariably he eats the other cats food because she's left it for "later".
Hence I suspect, why she is trying to bury it from him.
I've tried feeding them seperately but as she leaves her food for several hours, should I keep them apart for this long?
Try temporary exclusion (outside the kitchen or sitting room door) after a firm telling off. Usually works with Orientals - they hate being deliberately separated from people and regard it as a dreadful punishment. (Perhaps the only reproof some of them actually notice!) About 20 minutes to half an hour should do it.