forage

nouns

bulky food like grass or hay for browsing or grazing horses or cattle
the act of searching for food and provisions

verbs

collect or look around for (food)
is derived from
wander and feed
"The animals forage in the woods"
is a type of (narrower)
take in food; used of animals only
"This dog doesn't eat certain kinds of meat"; "What do whales eat?"