dog of toy terrier breed of brown with tan color runs out of tunnel and sand flies from under paws. speed and agility, sports with

activity agile agility animal arena beautiful big black breed brown canine competition contact course cute dog domestic ears equipment fast fluffy fun fur happy legs long mammal maneuverable miniature obedience obedient obstacle pedigree pet pipe pocket purebred race run sand shaggy small smart speed sport sports terrier toy training tunnel young