Don't feel bad, it happens so easily that a cat gains weight! Just look at my Luna!
I know it's so hard to put them on diets. I wanted to switch to a calory reduced food but I cannot seperate my cats all the time when they are eating, and there's no way I can feed skinny Lily a low fat food! It's really hard, especially since Luna is so lazy and doesn't play much!
Kirsten
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