I have two cats and one is very over weight (18 lbs) while the other is a very healthy weight. The smaller cat never over eats but the larger cat always eats too much. I keep dry food out for them all the time but that method of feeding is clearly not working for the larger cat.
I've thought about trying to put the smaller cat's food up higher but the large cat is still very agile and can get wherever the smaller cat can.
Any suggestions as to the best way to helping the larger cat lose weight without completely changing the smaller cat's routine? Also any thoughts on the best amount of food food to start feeding the larger cat when I put him on a diet?