6 Cat Weight Loss Tips – Creative Ways To Help Your Cat Lose Weight By Nicky LaMarco - Jan 24, 2017 3984 Share on Facebook Tweet on Twitter tweet 2. See the Vet and Calculate Make an appointment with the vet. Your vet can help you calculate how many calories your cat needs every day to be healthy and lose weight. Be honest with your vet about what, when and how you feed your cat. PREV3 of 7NEXT