The Jack Russell Terrier's coat is short and smooth and white in color with black, brown or mixed (bicolor) spots. There is also the variation of the rough coat, which is less common in Brazil, but which differs only in this physical characteristic.
Since Jacks are very active dogs, you need to be very careful about home security. The gates and walls must be high and the house or apartment must be well screened to ensure that he does not run after cars or go out to play in the street.
The Jack Russell Terrier emerged from the mix between the Fox Terrier and the English White Terrier (a breed that no longer exists) in England in the 19th century. A small dog, but with a super strong personality, which is often described as a "big personality" dog. In addition, the Jack Russell is very friendly and sociable. They are very brave and determined dogs and demand a lot of attention and energy from their human parents. The initial crosses to create the Jack Russell Terrier were aimed at creating the best fox-hunting dog possible.