Mammals of Colorado
The mammals most often spotted in Colorado, ranked by recent research-grade observations.
Naturalists have logged 105,586 research-grade observations across the 50 most-recorded species in Colorado. The most frequently seen is the Mule Deer, with 17,597 recorded sightings.
Rarer finds confirmed in Colorado include Bobcat - uncommon enough that a sighting is worth logging.
Most-observed mammals in Colorado
Built from recent research-grade iNaturalist observations. Identifications are community-sourced and may occasionally be wrong, and the ranking reflects where people record and photograph wildlife, so a species seen often here is not necessarily rare elsewhere. Some plants and animals are only out in certain seasons. Treat this as a lively snapshot of what people are finding, not a formal checklist.
Mammals in nearby places
Out spotting mammals in Colorado?
Take Huck with you. Identify any mammal you find in seconds and build your collection.
Get HuckLove mammals? Get Huck field notes
Spotting tips, new species, and the best of what people are finding in the wild - straight to your inbox.