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.
Males reach their adult size between ages 8 and 14, while females reach full size between ages 5 and 6. [ Photos of Polar Bears Swimming in the Arctic ]. 2. They can go days without eating. If a polar bear doesn't eat for seven to 10 days, it can slow its metabolism until it finds its next meal.