We’re officially a nations of dog owners, with the UK’s most popular pet living in around one-in-three households (and still rising).
That means that there are around three million pooches living here, with more people choosing to join the army of dog lovers every week.
Of course, if you are looking to welcome a dog into your family, there are 221 different breeds of pedigree dog to choose from, alongside numerous crossbreeds, so there’s plenty of thinking to do before you select your family’s latest addition.
There’s even academic guidance to seek out, with Psychologist Stanley Coren’s book ‘The Intelligence of Dogs’ ranking breeds by instincts, obedience, and the ability to adapt.
Choosing the right breed is absolutely essential – for example opting for a small dog if you don’t have much room at home, or a hypoallergenic dog if you suffer from allergies.
And one thing you might like to consider is that some dogs are naturally better guard dogs than others.
Labradors may be affectionate and popular, but they’re likely to welcome a burglar like a long lost friend - particularly if they come armed with sausages.
On the other hand, other breeds have been bred to be suspicious of strangers, ever-vigilant and ferocious when challenged.
Here are 13 of the best guard dog breeds.

9. Bullmastiff
The mere sight of a Bull Mastiff should be enought to put an intruder off. They have a fearsome reputation which comes from their former job of guarding estates for 19th-century gamekeepers. When not on security patrol they are affectionate and chilled, although don't suit multi-pet households. They like being top dog too much. | Canva/Getty Images

10. Rottweiler
A breed that have, at time, got a bad reputation for being aggressive, a well-bred and trained Rottie will only demonstrate aggression when it, its home or its family are at risk. When not on duty they are calm, confident, loving and playful animals that make great family pets. | Canva/Getty Images

11. Dachshunds
More of a watchdog than a guard dog, Dachshunds are very vigilent and hugely suspicious of strangers. Nobody is getting past them without a good barking, although they perhaps aren't as handy as other dogs in this list when it comes to a fight. | Canva/Getty Images

12. Boxer
One of the best medium-sized guard dog breed, the Boxer was developed in Germany as a hunting dog. Boxers take two things very seriously - protecting their beloved family/pack and making sure they get a good play every day. | Canva/Getty Images

