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Dogs come in all shapes and sizes - the UK Kennel Club recognises 221 different pedigree dogs, from Affenpinscher to Yorkshire Terrier (there are sadly no dog breeds starting with the letter ‘z’!).
Then there are all manner of crossbreeds, from so-called ‘designer dogs’ to lovable mongrels.
Each has its own list of positive and negative attributes, and it’s important to take plenty of time to think about what breed will fit into your lifestyle the best - for instance a smaller dog if you live in a flat, or a hypoallergenic dog if the mere mention of dog hair makes you think about sneezing.
There is even scientific research to guide you, in particular psychologist Stanley Coren’s groundbreaking book The Intelligence of Dogs.
Different breeds of dog also tend to have very different personalities – with some dogs happy to get on with pretty much anybody.
Others form a particularly strong bond with their owner and family that is non-transferable and will last for life.
Here are the 12 most loyal breeds of dog,
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9. German Shepherd
German Shepherds are known for literally putting their life on the line to defend loved ones. It's one of the many positive attributes that makes them great army and police dogs, forming a loyal bond with their handlers. | Canva/Getty Images
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10. Border Collie
Extremely intelligent (they have the highest canine IQ in the dog world) and energetic, Border Collies bond closely with their owners. They seek guidance and partnership, staying attentive and loyal to the person they trust most. | Canva/Getty Images
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11. Rottweiler
Rottweilers respond well to having a strong pack leader, so owners need to be firm and calm with them when they are young. Put in the time and effort and you will have a best friend for life who will protect you against any threat. | Canva/Getty Images
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12. Chihuahua
Bred to be companion dogs, Chihuahuas tend to establish a firm bond with one particular person and then want to accompany them everywhere they go. These are not dogs that like being left alone and are fiercely loyal. | Canva/Getty Images