Jack Russell does great show during the competition, he has such a lot of energy. Any dog not so well suited to the statement “in a weak body, strong spirit” as the Jack Russell Terrier.
It really is small, but very confident, full of energy, courage and always ready for action. By their nature, should not be and is not aggressive, and if exhibits such behavior, it is only in the case that at an early stage of development, often even from a breeder, were serious errors in education.
Breed Jack Russell Terrier became very popular in quite a short period of time, which in turn, has attracted the attention of pseudo-breeders who are interested in them breeding, which is a negative point.