French Bulldogs may still dominate as the most popular dog breed in the U.S., but a newer contender is rapidly climbing the ...

From German Shepherds to Bullmastiffs to Rottweilers, these are the best guard dogs breeds according to experts.

However, XL bullies are a hybrid breed not officially recognised by the UK Kennel Club, while the Mastiff, a dog with origins dating back around 3,000 years, has a long-established history.