Consider the following about Nilgiri Tahr:

1. The species is locally known as Varaiaadu.

2. There are multiple references to the Nilgiri Tahr in Tamil Sangam literature dating back to 2,000 years.

3.  It has been listed as an vulnerable species and is protected under Schedule-II of the Wildlife (Protection) Act of India, 1972.

4. It was designated as the State animal of Kerala in recognition of its ecological and cultural significance.

How many of the above statements is/are correct?