Endangered, threatened, and extirpated numbers compiled from Michigan's List (effective March 20, 1999). Also included are animal species of special concern, as compiled by Michigan Natural Features Inventory. While not afforded legal protection by Michigan's Legislation, many of these species are of concern because of declining or relict populations in the state.

Plants

• 51 endangered species
• 210 threatened species
• 110 special concern species
• 46 extirpated species

Mollusks

Mussels

• 8 endangered species
• 2 threatened species
• 8 special concern species

Snails

• 2 endangered species
• 2 threatened species
• 29 special concern species

Insects

• 8 endangered species
• 11 threatened species
• 75 special concern species

Fishes

• 8 endangered species
• 7 threatened species
• 11 special concern species
• 9 extirpated species

Amphibians

• 1 endangered species
• 1 threatened species
• 2 special concern species

Reptiles

• 2 endangered species
• 2 threatened species
• 6 special concern species

Birds

• 8 endangered species
• 13 threatened species
• 21 special concern species
• 1 extirpated species

Mammals

• 4 endangered species
• 2 threatened species
• 4 special concern species