This is a new thing for me, all of our other pets are highly food motivated. We've had Zelda for two weeks now and she's really meshed well with everyone. However, she's really skinny and I feel like she should be eating more. Right now she gets 1/3c science diet kitten food free fed and at night 1/5 a can of science diet kitten wet. This was what the rescue had her on, and when it runs out we'll switch her to Natural Balance like our other animals. She tends to nibble mostly at night, but the past few morning I've checked it and a lot is still left. Is this normal? Should I just go ahead and begin switching her? And what are good really tempting treats for kittens? Thanks!