Here is a common challenge, your terrier runs out once the door opens, even if he was nowhere to be seen before you opened the door. Or your puppy will not quit digging under the fence to escape your backyard. Whatever the case may be; dogs that run off are no laughing matter and terrier training is the best way to fix it.
They could get attacked by a dangerous animal, could get hit by a car, possibly get trapped … Read the rest