Sook is preety good with food and will never take it but she does give me those sad eyes when I get a snack from the fridge. Never at main meal times, she lets us eat uninterrupted but if I get a snack and sit in front of the TV I get that, "where's mine" look. Lately I've been giving her a small slice of cheddar cheese when I get my sandwich at lunchtime, this is most days is it doing any harm and how much can she eat without issue. She's a GSD/Whippet cross, medium size and weight 25kg. Thanks.