Just because he's small doesn't mean the Fox Terrier is suited to apartment life. He really needs a securely fenced yard (think Fort Knox) where he can run off all that energy during the day. And don't count on an underground electronic fence to keep your Fox Terrier in the yard. The threat of a shock is nothing compared to the desire to chase what looks like prey--cats, rabbits, cars.

Keep your Fox Terrier on leash when in unfenced areas. He has a strong hunting instinct and will chase anything that moves. He will also try to pick fights with other dogs, so he's not a good candidate for visiting dog parks. Early socialization is important to help prevent aggression toward other dogs.

Give your Fox Terrier at least 30 to 45 minutes of vigorous exercise daily, as well as plenty of off-leash play in the yard to keep him tired and out of trouble.

Although they're highly intelligent, they're also willful, so Fox Terriers can be challenging to train. Be patient and keep your sense of humor handy. They thrive on consistency and routine, so providing clear rules and enforcing them in a firm and positive way will produce the most progress. Once you've unlocked the secret to motivating them, they can learn anything you can teach.

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