A 9-month-old Cocker Spaniel needs at least one hour of exercise on a daily basis. It is important to space out this time throughout the day instead of getting all the physical activities done in a single go. Ideally, it is advisable to take them out for a walk at least twice every day. This helps them burn their calories and keeps them fit. Keeping them from daily exercise is likely to make them obese, irritable, and lethargic. It may also lead to a range of other health-related issues.