Mammals: One of the main draws to the park are its two species of gibbon - the White-handed or Lar gibbon and the Pileated gibbon, both of which can be spotted relatively easily. Many animals can be seen on the grasslands, including Sambar deer (large, grey-brown, often in groups), barking deer/muntjac (smaller, red-brown, usually in pairs or alone) and occasionally gaur. Elephants are sometimes spotted at salt-licks or on the road in the evenings (or even day) if lucky.