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.
And one thing you might like to consider is that some breeds tend to stay healthier for longer, meaning your vet bills shouldn’t be too painful and your pet has a better chance of a pain-free and lengthy life.
Conversely certain breeds are predisposed to certain health conditions which, in some cases, may shorten their life.
This doesn’t mean that they don’t make great pets – in fact some are amongst the most popular and loved dog breeds in the UK – but it’s important to know that there are potential issues so you know what symptoms to look out for so you can make sure your pooch gets the best possible early treatment.
Here are the 24 most and least healthy dog breeds.
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21. Boxer
The Boxer's cute short snout may look cute but, combined with its excitable nature, it means this dog is particularly susceptible to heatstroke. They are also known to have a high cancer risk, with a predisposition to lymphoma and brain tumors. Cardiomyopathy, hip dysplasia, and allergies can also be issues to look out for. | Getty Images
22. Cocker Spaniel
Owners of friendly and loyal Cocker Spaniels should be aware that their pet is susceptible to a range of health issues, including a variety of orthopaedic issues, epilepsy, heart disease and liver disease. | Getty Images for Westminster Ken
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23. Newfoundland
The Newfoundland's huge size is responsible for its most common health problem - a condition called Subvalvular Aortic Stenosis which decreases the blood flow to the heart causing cardiac arrest. They are another breed prone to hip and elbow dysplasia. | Getty Images for Westminster Ken
24. Saint Bernard
Saint Bernards have two main health concerns - a predisposition to bone cancer and an abnormality in the heart muscle called cardiomyopathy. Owners should keep a close eye on their pets to look out for signs of pain when the dog walks, or changes in breathing indicative of a heart problem. | AFP via Getty Images