Today Nagarhole Park comprises of Arikeri, Hatgat and Nalkeri reserve forests, along with adjoining Mysore reserve forests. The topography is undulating with several permanent and seasonal streams and tanks. The forest cover generally consists of a moist deciduous thick jungle with a thirty-meter high top. The rich tropical forests, flourishing green swamps and numerous water resources make Nagarhole National Park an ideal habitat for wildlife.

The forest is home to animals like the four-horned antelope, sloth bear, jungle cat, civet, spotted deer, elephant, wild dog, flying fox, tiger, panther, gaur (Indian bison), sambhar, wild boar, black-naped hare, bonnet macaque, and pangolin. Cobras, crocodiles, kraits, pythons, vipers, and several species of lizards are also found here.

Among the 250 bird species found here, the prominent ones are the common babbler, bee-eater, bulbul, dove, crested serpent, hornbill, Malabar pied, alexandrine, peacock, woodpecker, warbler, great Indian reed, eagle, crested hawk, golden-back parakeet, and the southern tree pie. Nagarhole is worth visiting at the height of the dry season, when wild animals can be spotted in large numbers near sources of water.

Vehicles and guides are available to take you around the Nagarhole National Park. If this natural heaven awakens the 'spirit of adventure' in you then consider heading for the Brahmagiri Mountains—an inviting destination for those who wish to go trekking. Prior permission is required from the authorities before embarking on a trekking trail. 

The summer (March–May) temperature does not cross the 33°C mark. The brief winter, which lasts from November to January, has temperature plummeting to 14°C. Monsoon is erratic, but it generally rains from June to September.

Nagarhole National park is well connected to adjoining areas of Karnataka. Motorable highways link the park to the towns of Madikere (90 km) and Mysore (96 km) where state transport buses and taxis are freely available. The journey from both places lasts approximately 2 hours. The nearest well-connected railway junction is Mysore, while the nearest international airport is Bangalore (220 km). Various airlines link Bangalore to the rest of the nation.

The Forest Department manages two rest houses, but reservation has to be made well in advance through the Forest Department offices in Mysore or Bangalore to stay here. The Kabini River Lodge near Karapur on the Mysore–Manathavadi highway also has good accommodation facilities. However, this lodge cannot be reached by public transport, so you will need to rent a car to get there. It is situated 65 km from the park’s reception center. Another option is a lodge at Kutta, 10 km from the reception center. Alongside the Nagarhole main road is another resort—the Jungle Inn (at Veeranahosahalli)— that is right at the main entrance of the park. It has colonial lodges, private rooms and dormitories with modern amenities. 

The nearest towns with all communication (post, telegraph, phone and fax) and medical (hospitals, chemists) facilities are Kutta (7 km) and Mysore (96 km). Internet cafés have started mushrooming in Mysore since 1995.

One must arrive at the park gates well before dusk, for the road through the park that leads to the lodges is prone to elephant blocks and closes at 6 pm. Those interested in trekking should avoid visiting the park during monsoons as floods wash out most of its dirt tracks and leeches render trekking impossible.