Koundinya Wildlife Sanctuary is located in Andhra Pradesh. Here is a detailed explanation of the answer:

Introduction:
- Koundinya Wildlife Sanctuary is a protected area in India that is dedicated to preserving the natural habitat and wildlife of the region.
- It is named after the famous sage Koundinya, who is believed to have meditated in the area.

Location:
- Koundinya Wildlife Sanctuary is located in the state of Andhra Pradesh in India.
- It is situated in the Chittoor district, near the town of Madanapalle.

Geographical features:
- The sanctuary is spread over an area of approximately 357 square kilometers.
- It is located in the Eastern Ghats, a mountain range that runs parallel to the eastern coast of India.
- The sanctuary is nestled amidst the picturesque landscape of hills, valleys, and dense forests.

Flora and Fauna:
- Koundinya Wildlife Sanctuary is home to a diverse range of flora and fauna.
- The sanctuary is known for its rich biodiversity and is home to several species of animals, birds, and plants.
- Some of the commonly found animals in the sanctuary include leopards, sloth bears, sambar deer, spotted deer, jungle cats, and wild boars.
- The sanctuary is also a haven for birdwatchers, with numerous species of birds such as the Indian roller, painted stork, white-bellied woodpecker, and yellow-throated bulbul.
- The vegetation in the sanctuary includes dry deciduous forests, scrublands, and grasslands.

Conservation efforts:
- The Koundinya Wildlife Sanctuary is protected under the Wildlife Protection Act of 1972.
- The Andhra Pradesh Forest Department is responsible for the management and conservation of the sanctuary.
- Several measures have been taken to protect the wildlife and their natural habitat in the sanctuary, including anti-poaching patrols and the establishment of watchtowers.

In conclusion, Koundinya Wildlife Sanctuary is located in the state of Andhra Pradesh in India. It is a protected area that is known for its diverse flora and fauna, and efforts are being made to conserve and protect the wildlife and their habitat in the sanctuary.