38 Dog Breeds That Require Extra Caution and Understanding

27. French Mastiff

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The English Mastiff represents a giant breed, known simply as the Mastiff by the National Kennel Club. They need abundant energy and regular exercise. These dogs are robust and have strong protective instincts. Their size, enormous paws, and a bite force of 552 psi can make them a threat, yet with proper care, they are often gentle and reliable family protectors. They are best suited to homes without small children due to their size.