Breed Standard

General Appearance

Sturdy, symmetrically built, working terrier like an old-fashioned Sealyham type. The Lucas Terrier was originally created by crossing Norfolk Terriers with a small number of selected Ilmer Sealyham Terriers. The following mixes are now accepted onto the Breed Register and are considered to be Lucas Terriers: true Norfolk/Lucas or Sealyham/Lucas hybrids (NOT permitted with Norfolk bitch, due to relative size) as well as Lucas/Lucas pairings, all of which must have a direct link back to an Ilmer Lucas Terrier. All living Lucas Terriers in the UK can trace their ancestry back to Sir Jocelyn Lucas’s Ilmer kennels Lucas Terrier lines.


Friendly, with no aggressive tendencies towards people or other dogs, and not fearful or nervous.


Broad skull, a little curved between the ears, flattening to a slight but definite stop. The jaw should be strong, deep and well developed. A medium length, deep muzzle. The nose black irrespective of the colour of the dog. Dark, almond shaped eyes, well set, with pigmented eye rims. The drop-ears should be of medium size and v-shaped.


The teeth should be strong, sound and regularly placed, gripping with a scissor-like action, the lower incisors close behind and just touching the upper. Not to be overshot, undershot or wry.


The neck is strong, muscular and of medium length broadening to blend into the body.


The shoulders are broad of blade, sloping, muscular and well angulated to the upper arm and the point of the shoulder should not be too closely set. The forelegs have strong, round bone, extending to the feet without weakness of the pasterns. The forelegs should be perfectly straight when viewed from the front.


The hindquarters are broad, strong and muscular. Thighs are long, broad and well let down. When viewed from behind the hind legs, from the hocks to the feet, are straight and placed neither close nor too wide apart.


The length of the body from the point of the breast bone in a straight line to the buttocks is slightly greater than the height at the shoulder. The topline is level, back strong, with ribs well sprung and ribbed (not barrel ribbed). The chest is deep and muscular and moderately broad, loins are broad, deep and muscular with deep flanks strongly coupled between the fore and hindquarters.


Either docked or un-docked. Docked: tail of medium length with one-third off, two-thirds on, with a rounded tip and preferably carried erect. Undocked: tail of moderate length and ideally carried erect, but not excessively over the back, and with no curl, kink or twist.


The coat should be fairly harsh, weather resistant and of medium length.


May be coloured or white.
a. In predominantly coloured terriers the colour should be tan (all shades) or saddle and tan (the saddle can be black or badger-grey). White markings may be elsewhere. Black or badger should not be the overall or predominant colour.
b. In predominantly white terriers the colour should be a base coat of white with coloured markings, piebald or extreme white spotted pattern. Ticking is permissible. Markings may also be tan (all shades), black, badger-grey, black and tan or badger-grey and tan.


Measured at the shoulder: Dogs 10-12 ins (25-30 cms); Bitches 11 ins (28 cms).


Dogs 14-20 lbs (6-9 kg); Bitches 11-17 lbs (5-8 kg).


Soundness is essential. The action should be true, free and supple, and with capability of quick and sudden movement.