You will lose a pound if you burn 3500 more calories than you take in. This is one of the bottom lines in weight loss but whether or not you are actually burning 3500 calories varies from person to person with the same activity.
A dog can survive without eating for 14 days, procided day wouldn't be in good shape and health.
Quick Answer. The length of time a cat can go without food depends on the individual, but the average is between 2 and 10 days. However, it is best not to allow a cat to go more than 24 hours without eating to prevent serious organ damage. Continue Reading.