{"data":{"slug":"lucas-terrier","name":"Lucas Terrier","url":"https://techtools.cz/tools/dog-atlas/lucas-terrier","api_url":"https://techtools.cz/dog-atlas-api/v1/breeds/lucas-terrier","also_known_as":["Ilmer Terrier"],"kind":"breed","extinct":false,"group":{"key":"terrier","label":"Terrier","fci_group":3,"fci_group_name":"Terriers"},"size":"Small","origin":"England","countries":["England"],"height_cm":null,"weight_kg":{"min":5.0,"max":8.0},"life_expectancy_years":null,"temperament":["Even-tempered","Friendly","Sturdy","Companionable","Bold"],"exercise_level":"Medium","wikipedia_views_60d":2213,"summary":"A small, sturdy English terrier created in the 1940s by Sir Jocelyn Lucas from small Sealyham Terriers and Norfolk Terriers. Friendly and even-tempered, it makes a good companion while keeping a working terrier's drive.","photo":{"url":"https://techtools.cz/tools/dog-atlas/photos/lucas-terrier-6c552b08a4-1280.webp","small_url":"https://techtools.cz/tools/dog-atlas/photos/lucas-terrier-6c552b08a4-640.webp","width":1280,"height":958,"author":"Kp34n7qy","license":"CC BY-SA 3.0","license_url":"https://creativecommons.org/licenses/by-sa/3.0","source_url":"https://commons.wikimedia.org/wiki/File:Typical_Lucas_Terriers.JPG"},"updated_at":"2026-10-15T14:50:56Z","ratings":{"energy":3,"exercise":3,"grooming":3,"shedding":2,"trainability":3,"barking":3,"kids":4,"other_dogs":3},"coat":"Dense, harsh and weather-resistant","colors":["White","Cream","Pale shades"],"fun_fact":"A Norfolk Terrier bred to a modern Sealyham will not produce a Lucas Terrier: authentic dogs must descend from Sir Jocelyn's original Ilmer lines.","sections":{"overview":"The Lucas Terrier is a small, sturdy terrier created in England in the late 1940s by Sir Jocelyn Lucas at his Ilmer Kennels in Hertfordshire. All authentic dogs trace back to his original lines.\n\nIt was bred mainly for companionship, but it keeps a working terrier's character and a growing number are worked around the world.","history":"Sir Jocelyn Lucas, a huntsman and Sealyham Terrier breeder, disliked the larger heads and heavy shoulders that were appearing in show Sealyhams. He crossed one of his smaller Sealyham bitches with Norfolk Terrier dogs.\n\nThe Ilmer programme was continued by Enid Plummer, and later by Jumbo Frost, who set the breed type, formalised the standard and helped establish the Lucas Terrier Club in the UK. Clubs now operate in Britain and the United States, and a separate Sporting Lucas Terrier also exists.","appearance":"The Lucas Terrier is a sturdy, symmetrical working dog, much like an old-fashioned Ilmer Sealyham. It is small, typically around 5 to 8 kg, and pale or white dogs are often mistaken for Sealyhams.\n\nThe breed standard asks for a harsh, weather-resistant coat of the old terrier type.","personality":"The standard calls for a friendly dog without aggression and neither fearful nor nervous. Lucas Terriers are even-tempered and companionable, while keeping the usual terrier traits of boldness and curiosity.\n\nThey suit families and are happy to work or to share the sofa.","care":"A daily walk and some play are enough for most, and the working types enjoy more to do. Terrier instincts mean a secure garden and a lead near small animals.\n\nThe wiry coat benefits from regular brushing and occasional hand-stripping or trimming.","health":"The founders introduced Norfolk Terrier and small Sealyham blood partly to improve health. Specific conditions are not well documented."},"recognition":{"fci_number":null,"fci_standard_url":null,"akc_url":null},"sources":{"wikipedia":"https://en.wikipedia.org/wiki/Lucas_Terrier","wikidata":"https://www.wikidata.org/wiki/Q15618573","wikipedia_revision":1312024257},"profile":{"written_by":"AI model (Claude Sonnet) from the sources above","written_at":"2026-10-15T13:59:38Z"}}}