Your Jack Chi hybrid family member can take on the appearance characteristics of either or both of the parent breeds, the Chihuahua and the Jack Russell Terrier. His coat will likely be short and dense and the colors of the coat can be black, white, brown, chocolate, cream, golden, fawn, black and brown, black and white, black and tan, brown and white, dark brown, light brown and tricolor. He is described as being a small to medium sized dog, being a maximum of 15 inches tall and weighing between 8 and 18 pounds. His has a dense coat, short of neck, elongated but muscular body and large eyes on a triangular head. The ear set can be either erect like the Chihuahua parent or folded or curled over like the Jack Russell parent. The snout, body build and coloring generally show the contributions from the Jack Russell parent while the coat and the length of the legs are more like the Chihuahua side. It is quite possible that your Jack Chi could actually be under 10 inches at the shoulder! His muzzle could also take on the thinner size from the Chihuahua side. The facial expression will likely be alert and intelligent with large dark eyes and a black nose. The hindquarters will likely be strong and muscular to provide the strong, springy gait and jumping ability from the Jack Russell side with feet that can be round and thickly padded or small and dainty with good padding, the padding likely being pink or multicolored. Your Jack Chi will have a tail that resembles the Chihuahua side, being long and a little fluffy.