How often and where do you exercise your dog(s)? We have had our first dog (a lab/possible greyhound cross) for four months now and I often wonder if he gets enough exercise. He is 2 yrs old and un-neutered and I take him to the local woods/ heathland twice a day for about 30 mins each time, where he is off the lead and runs like a mad thing chasing rabbits and he has another 3 short walks of about 10-15 mins each on the lead. Do you think this is enough? How much do you walk your dogs?