The Wildlife Conservation Society's Bronx Zoo in New York announced the one-horned rhinoceros, better known as an Indian rhino calf, born at zoo will makes its first public appearance in Wild Asia.

"The gestation period for an Indian rhino is 16 months. The female calf weighed around 120 pounds at birth on April 6 and will grow to approximately 4,000 pounds as an adult," the Bronx Zoo said in a news release. "Her mother and father are Penny and Sanjay. She is the 13th Indian rhino born at the Bronx Zoo since 1986. Exhibit times for the calf will be intermittent and will vary day-to-day."

There are reportedly 56 Indian rhinos in Association of Zoos and Aquariums (AZA) accredited North American zoos.

The rhino's birth was a part of AZA's Species Survival Plan, "a cooperative breeding program designed to maintain genetic diversity in zoo populations of threatened and endangered species," the Bronx Zoo said in a news release.

"The rhino's horn is made of compressed kerotin fibers, the same substance that makes up hair and fingernails in humans," the Bronx Zoo said. "Rhinos are illegally hunted for their horns, which are used in traditional medicine or used for dagger handles. Rhino populations are increasing in India due to strict regulations, but numbers are still on the decline in many areas of Nepal and Northeastern India. "

These particular rhinos are native to grasslands and swampy areas of northern India and southern Nepal. There are less than 3,000 Indian rhinos left in the wild, with 70 percent of the population living in Kaziranga National Park in India.

The one-horned rhinos are solitary animals except when mating or when females are tending to their young offspring.

Though their outward appearance may look tough, rhinos must frequent mud wallows keep cool and regulate their body temperature. The mud also works as a natural "sunscreen" to protect their skin from the sun.

"Indian rhinos are designated as "vulnerable" by the International Union for Conservation of Nature (IUCN) and as "endangered" by the U.S. Fish and Wildlife Service," the Bronx Zoo stated.