Out for walkies, tiny Tyson's little legs don't look like they'll get him too far. But the energetic chihuahua and Ihasa cross's miniature frame could well put him in the running for the title of Britain's smallest dog. The five-month-old pup weighs 13oz and stands 4in tall to the shoulder. His owner Rosemarie McLinden cannot find a collar to fit him - so took him for a walk on a ferret harness. Scroll down for video Tyson the puppy going for his first walk with owner Rosemarie McLinden in Keal, Lincolnshire. At just 4in tall, the chihuahua Ihasa cross is thought to be Britain's smallest dog
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Tyson, the chihuahua and Ihasa cross is just 4in tall and weighs 13oz
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Was taken in by owner after being rejected by the rest of his litter
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Strapped in a ferret harness, the puppy took its first walk in Keal, Lincolnshire
The puppy, pictured with the @placeholder family's golden retriever, weighs just 13oz and was rejected by his litter at birth