Forests sustain the population of Elephants and tigers. Animals such as Sumatran elephants and tigers are known to consume durians. Examples of such animals are zebras, elephants, and wildebeest. Apes, monkeys, elephants, and dolphins have been studied most frequently. The country is noted for its population of forest elephants and western lowland gorillas. Some aggressive interactions between elephants and rhinoceros have been recorded. Spring-like kinetics could explain the difference between the motion of elephants and other animals. They had large tusks and ridged teeth for eating plants like modern elephants. Horses unaccustomed to the smell of elephants also panicked easily. Caltrops served to slow down the advance of horses, war elephants, and human troops. Sitaralak imitates the power of a herd of stampeding elephants. Mahouts were responsible for capturing and handling elephants. Arjuna used the Aindra-Astra which killed thousands of Rathis, Atirathis, Elephants and horses. He advised Chandragupta to setup forested sanctuaries for the wellness of the elephants. His forehead and domes were more prominent than in other Asian bull elephants.