Herd resting on the grass under the afternoon sun after grazing during a hot summer day

ruminants in asia sambar deer herd grazing phu khiao wildlife sanctuary rusa unicolor rusa mammals deers of asia ruminant grassland wild animals sambar wildlife artiodactyla national parks in thailand animals omnivorous natural habitat stag jungles resting sanctuary national parks green grass deer nature vulnerable species rainforest forests cervidae antlers forest grass trees ventral surface doe mud cervinae mud bath prey green predator cud afternoon vulnerable summer sore hot