Three seriously eating minerals straight on the mud, an individual walks towards the left, others under the shade

macaca arctoides kaeng krachan national park mammals foraging animals macaca primates wildlife stumptailed macaque tropical animals monkeys apes macaque foraging conservation old world monkey bear primate vulnerable species habitat cercopithecidae monkey simiiformes jungle mud haplorhini infant thailand world heritage tropical forest nature eating jungle ambience troop rainforest salt lick unesco digging forest vulnerable nutrients frugivorous vegetation daytime minerals trees insects summer hot butterflies