Long-nosed monkeys at Chimelong Safari Park in Guangzhou, Guangdong province. [Photo by Zheng Erqi/chinadaily.com.cn]

Two long-nosed monkey babies made their debut for tourists in Chimelong Safari Park in Guangzhou, Guangdong province, on Wednesday, attracting many visitors hoping for a look.

The two stars, born on Sept 6 and 18, were the fifth and sixth proboscis monkeys to have been bred in the park, according to Chen Siming, a monkey keeper.

Long-nosed monkeys at Chimelong Safari Park in Guangzhou, Guangdong province. [Photo by Zheng Erqi/chinadaily.com.cn]

Their mothers, Jasin and Lady, were found to be pregnant in February, Chen said.

The park is asking members of the public to suggest names for the newborns.

Long-nosed monkeys at Chimelong Safari Park in Guangzhou, Guangdong province. [Photo by Zheng Erqi/chinadaily.com.cn]

An adult proboscis monkey's nose can grow to 10 centimeters in length. The larger the nose, the easier it is to win favor from the opposite sex, as enlargement of the nasal cavity changes vocal characteristics.

Proboscis monkeys, which are great swimmers, live mainly in Brunei, Indonesia and Malaysia and eat fruit, leaves, flowers, seeds and some insects.

Visitors observe long-nosed monkeys at Chimelong Safari Park in Guangzhou, Guangdong province. [Photo by Zheng Erqi/chinadaily.com.cn]

Chimelong Safari Park imported the monkeys from Indonesia in September 2017. Six babies have been born in the park in the past four years.

To protect and breed the rare species, the park established a primate research center dedicated to conservation worldwide.