The Norwich Terrier is a breed of dog originating in England,[1] and was bred to hunt small rodents.

These terriers are one of the smallest working terriers weighing approximately 12 pounds (5.4 kg) and ideally not being above 10 inches (25 cm) at the withers, with prick ears and a double coat, which comes in all shades of red, tan, wheaten, black and tan, and grizzle.

[6] A retrospective study on cataracts using patient records from North American hospitals found a prevalence of 4.02% for the Norwich Terrier compared to 1.61% for mixed-breed dogs.

[8] A 2019 study found that some Norwich terriers suffering from respiratory tract disorders shared a mutated variant of gene ADAMTS3 that is typically associated with swelling around the airways.

[9] A questionnaire identified the Norwich Terrier as requiring more than half of all bitches to undergo caesarean section to give birth.

Cooke bred Rags to multiple sporting terriers belonging to different townsfolk and all of the puppies had red coats.

Hopkins bred Nell and her dam to a dog he had purchased named Jack, a cropped ear, sandy coated terrier.

Jones eventually quit his job and moved to Market Harborough, he brought terriers sired by Rags into the town to work as ratters.

In 1956 he attended a show and decried the modern Norwich claiming his dogs were no larger than the Yorkshire Terrier and saying he did not care about any so-called 'improvements'.

Despite the Kennel Club chairman A. Croxton Smith stating that restricting to one ear type would cause difficulties and a breeder known as Colonel Gell saying: 'in this vascillating ear regulation, the Norwich Terrier Club is laying up for itself, trouble in the future.'

the president of the Norwich Terrier Club — Jack Read — refused to allow black and ten and drop eared dogs into the draft standard.

In 1935 Read resigned from his role as president after the first breed standard came out due it to including both black and tan and dropped ears.

In 1957 she fought to make drop ears be considered equal but the Kennel Club rejected her arguments.