All small pets (including cats) need regular exercise

Many people thought small dogs running around the apartment is sufficient, they are wrong. I agree with with Dr Becker.  Dogs, no matter what their size, deserve at least 20 minutes of vigorous exercise every day.  Just like people!  Take your dog for a run (they can run much, much faster than you can) for a half an hour and watch your waistline (and your dog's indoor behaviour) improve dramatically.