Teddy Roosevelt Terriers have higher than average prey drive and will chase squirrels, rats, stray cats, and any other animals they consider prey. They also dig and follow mole trails, leaving an array of trenches and holes behind. They make excellent watch dogs, and can be very protective and territorial. They share a love for their families and become very attached, craving human interaction and affection. Always by their owners' sides, they become constant shadows, following their masters around throughout the daily routine.