Treadmills -- Sprints or slow and steady

well i'll throw in my couple of penny's . just find a good speed they are comfortable with and let them trot it out .. when is the last time you watched or seen a fox or yote just sprint for the heck of it ? you just want to keep their muscles toned up , your not entering them in the greyhound derby's [ or are you lol ] you keep their muscles toned and their weight in check , and all else will be in place . if they don't have the heart [ or drive ] to finish a race no amount of conditioning will give it to them .

SLOW AND STEADY WINS THE RACE !!!!!!!!!!!!