Personally, I do not think that coat color has much to do with being overweight. This problem is confined to each particular cat. My Tiger is heavy, but not overweight. she weighs about 9 lbs. (4kgs). BTW, to change Kilograms into English pounds, multiply the Kgs by 0.453, and to change pounds to kgs, divide the pounds by 0.453. Roughly speaking, one kilogram equals approximately 2 lbs.

......wayne