WildSnapField Guide
Mammals

Mule Deer

Odocoileus hemionus

Photograph of Mule Deer (Odocoileus hemionus)
Photo: (c) Oregon Department of Fish & Wildlife, some rights reserved (CC BY-SA) (CC-BY-SA) · source

What it is

The mule deer (Odocoileus hemionus) is a deer indigenous to western North America; it is named for its ears, which are large like those of the mule. The several subspecies include the black-tailed deer.

Where and when to find it

Habitat
You can find Mule Deer mostly in the western half of the US, from forests and mountains to grasslands and deserts.
How to find it
Look for them at dawn and dusk, often grazing in open areas or at the edge of forests. Listen for rustling in the bushes. Their large ears are a good clue!
Best time of day
Dawn and dusk, any season.

How it lives

What it eats
Leaves, twigs, grasses, and shrubs
What eats it
Mountain lions, coyotes, wolves, bears

Worth knowing

  • They have a unique way of running called 'stotting' or 'pronking', where all four feet leave the ground at once.
  • Male Mule Deer grow antlers every year and then shed them.
  • Fawns (baby deer) have white spots that help them hide.
  • Their ears can be up to 10 inches long!
  • They often freeze when they sense danger, hoping to blend in.
  • Their tail has a black tip, which helps tell them apart from White-tailed Deer.

Why it matters

Mule Deer are a key food source for predators like mountain lions. They also browse on plants, helping to shape their habitats.

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