It is a relatively new breed, created by the breeder Horak Frant from Klanovice in 1949, by crossbreeding the Sealyham and Scottish terriers in order to obtain a dog for burrow and open field hunting.
It is a small to medium-sized dog, with a long body, short and strong legs and strong muscles. The head is trapezoidal, proportional to the body, with a big, black or dark red nose. On the lower jaw it has a thick beard. The eyes are medium-sized, deeply-set, dark, with bushy eyebrows. The ears are medium-sized and drooping. The tail is quite long and hanging. The fur has soft, glossy, thick, silky, slightly wavy hair. The most common colour is greyish-blue in different shades. It can also be fawn, with or without white spots on either.
It is an intelligent, calm, sociable, brave, alert, lively, active dog that is very quiet for a Terrier. Affectionate and loyal to its master, it is patient, gentle and loving with children. It is cautious and suspicious of strangers, but it gets along well with other dogs and other household animals.
Some parts of the body are trimmed regularly (4 times per year): scruff, back, sides and neck. The hair will be left untrimmed on the legs, belly, whiskers, eyebrows and beard. In these areas the hair should be brushed weekly or whenever necessary not to get tangled. Excess hair between the footpads will be cut.
It is a dog which adapts easily to indoor or outdoor life, being healthy and resistant to weather changes. It likes living with an active and loving family, it loves walking and has a moderate level of activity. It needs socialization and training.
This dog is easy to train because it is intelligent, hardworking, obedient. It must be accustomed from an early age to people, other animals and other dogs. The training must be well-balanced, gentle and consistent. I likes to fret, to play, to take long walks to various places.
It is a good burrow and field hunter, a good watchdog for the house and a lovely companion, especially for a family with children.