If the ferret in question has recently gained the weight, since lets say September or so, it's probably winter weight gain and nothing to worry about. My boy can pack on the grams for winter, he will lose it come spring. If it's been longer than that then other issues need to be considered, like treats or playtime or the food you are currently feeding. Also, are there any other health issues going on? This was a real interesting article, I believe Danee was the one who originally posted it. I learned a lot about food reading it. http://www.petsynergy.com/overview.html Here is the link for the Ferret Universe food chart. It's a bit out of date but does explain what to look for in the first ingredients. It does say corn shouldn't be higher than 4th or 5th. http://www.ferretuniverse.com/care/food.asp Speaking of ingredients, I looked up some foods today online. Yes, Evo has made some minor changes but nothing to worry about. The big shocker was Orijin, they have really changed their ingredients. I suppose we should always be reading the labels, even for foods we have been using for years. And lastly, I learned from Liz at Totally Ferret you can freeze dried food. Now I can buy a bigger bag, save money, and have it last longer. I hope some of this was useful. I don't know a lot about food, I've tried to learn. If the original poster has any questions they can email me direct. Tracy [Posted in FML 6926]