A close-up shot of an alarmed Indian one horned rhino submerged in a lake cooling off on a hot day

outdoor daytime endangered species conservation horn wild endangered greater onehorned rhinoceros mammal nature wildlife animal environmental conservation rhinoceros natural condition animal head asia indian onehorned rhino single hroned rhino environment outdoors backgrounds green color indian onehorned rhinoceroses scenics nature travel forest horizontal national park grassland grass rhino india safari water submerged cooling