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Idaho Fish and Game

Aging your harvested deer

Learn how to properly age your mule or white-tailed deer. Whether it's for chronic wasting disease sampling or personal curiosity, these images and descriptions help you determine the age of your animal.

(All photos courtesy of Texas Parks and Wildlife)

Fawns

Fawns have 5 or less teeth present and the third premolar (tooth 3) has 3 cusps. They have eight incisors that show no wear and will be replaced.

Fawn jawbone

Yearlings

Yearlings have 6 teeth. Tooth 3 (3rd premolar) has 3 cusps. Tooth 6 has erupted and is slightly visible just above the gum line. They will have or will be replacing the first (middle) set of incisors. Between the age of 1.5 and 2.5 years the other sets of incisors will be replaced.

Deer Yearling Jawbone

Adults

Adult deer (older than 2.5 years) have 6 teeth. Tooth 3 has 2 cusps. They will have replaced each set of incisors.

Adult deer jawbone