2024. Parental Care Behavior Of Sumatran Elephants (Elephas maximus sumatranus) During Nocturnal Activities In Gunung Leuser National Park, Tangkahan Resort, Langkat, North Sumatra, Indonesia. International Journal of Ecophysiology. 6, 2 (Sep. 2024), 102–110. DOI:https://doi.org/10.32734/ijoep.v6i2.17753.