Mammals:
* Reindeer and caribou: These animals rely heavily on lichen, especially in the winter when other food sources are scarce.
* Deer: Some species of deer will eat lichen, particularly when other food is limited.
* Mountain goats: These animals graze on lichen in rocky mountainous environments.
* Squirrels: Some squirrel species will nibble on lichen.
Birds:
* Chickadees: These birds have been observed eating lichen, particularly in winter.
* Finches: Certain finch species may eat lichen, especially in northern areas.
* Crossbills: These birds use their specialized beaks to extract seeds from lichen.
Insects:
* Moths and butterflies: Some species of moths and butterflies have larvae that feed on lichen.
* Beetles: Certain beetle species are known to eat lichen.
Other:
* Snails and slugs: These creatures may graze on lichen.
It's important to note that while these animals eat lichen, it's not typically their primary food source. They often supplement their diets with other plants, fungi, or insects.