Deer and elk using natural mineral lick

Detailed Description
In the same day, a female mule deer (left image), an elk (middle image), and finally a buck mule deer (right image) visited the same mineral lick in the Greater Yellowstone Ecosystem. The USGS is investigating how the aggregation of multiple individuals and species in mineral lick locations can influence wildlife disease transmission.
Sources/Usage
Public Domain.
With permission from the NPS