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.
The number of days you can survive without food varies from person to person. A 2009 review in âArchiv Fur Kriminologieâ reports that humans can generally survive with no food or drink for eight to 21 days and may be able to survive without food, if they have water, for up to two months.