If you need to reduce the amount of kibble given at a feeding to achieve weight loss, yet still satisfy that empty feeling they get at having less to eat, then yes, you would want to provide bulk without calories. I would be more inclined to go with rice cakes than rice krispies. No added sugar and they are great to use as a substitute for treats too. Break one in half and spread with a little reduced fat peanut butter! I did this for my late, great Chloe, until I discovered that her weight problem was primarily due to hypothyroidism . Once that was under control the weight came down easily. Any chance Kira's thyroid is out of whack?