Calorie Basics · August 6, 2026Do Spayed or Neutered Cats Need Fewer Calories?
Yes. After surgery, many cats need fewer calories but eat more. Learn how much to change and how to watch weight.
Calorie Basics
How many calories cats need, and why the number changes.
Calorie Basics · August 6, 2026
Calorie Basics · February 3, 2026Cat Resting Energy Requirement (RER) Explained
RER is the starting point for every cat calorie plan. Learn the formula, a worked example and the life stage factors vets use.
Calorie Basics · January 12, 2026How Many Calories Does a Cat Need Per Day?
A healthy adult cat needs roughly 20 to 26 calories per pound daily. See typical numbers by weight and what changes them.