A chocolate and tan shorthaired Chihuahua portrait showing the characteristic traits of the breed. Chihuahuas occur in virtually any color combination, from solid to marked or splashed, allowing for colors from solid black to solid white, spotted, sabled, or a variety of other colors and patterns. Colors and patterns can combine and affect each other, resulting in a very high degree of variation. Common colors are fawn, red, cream, chocolate, brown, mixed, white, and black. No color or pattern is considered more valuable than another. Chihuahuas may tremble or shiver when stressed, excited, or cold. These dogs, especially the short coat variety, are less tolerant of cold than larger breeds, and require a sweater/coat and/or boots in cold weather. They seek warmth in sunshine, under blankets, or on furniture, or human laps.