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.
With an adult my dogs can go 12 hours like over night- but of course they are not active. With my dogs I add cranberry capsules ( the amount based on the dogs weight- ..) and that helps to keep the urinary tract healthy. Activity, eating etc greatly affects how long a dog can hold it without having to go. Reply .