The Teddy Roosevelt Terrier has a complete set of good-sized, evenly spaced, white teeth. A scissors bite is preferred but a level bite is acceptable. The nose is black or self-colored. Eyes may be round to almond shaped and are small, somewhat prominent, and set obliquely. Eye rims match nose pigment.
Eye color ranges from dark brown to amber and corresponds with coat color.
Hazel eyes are acceptable in dogs with lighter coat color. Blue or amber eyes are permitted in blue-colored dogs only, but a dark gray eye with gray eye rims is preferred. Ears are V-shaped, set at the outside edges of the skull. Matching ears are strongly preferred. Non-matching ear carriage should be penalized to the degree of the variation.