We have been making the switch with our cats too. One is younger, overweight and addicted to kitty kibble. Well, at least she was. The other is older and a lifelong runt and too skinny. We started the switch about 3 weeks ago. The older kitty is not taking to the raw very well and we just started over with her feeding her as much quality canned as she wants. At least she eats that. She has never been a big kibble eater.

With the younger, overweight cat, we are cautiously optimistic that we may have success on our hands. We started her at about 10% raw/90% canned and a very small amount of kibble 2X/day. She is now eating about 80-90% raw mixed with canned and she maybe eats about a tablespoon of kibble - still feeding her 2x/day. She has lost about 10 ounces. Hopefully in another week she will be on an all raw food diet.