AMSTERDAM (Reuters) - Sibu the Orangutan has miffed his Dutch keepers by refusing to mate with females and showing sexual interest only in tattooed human blondes.

Apenheul Primate Park hoped Sibu would become its breeding male when he arrived two years ago, but orangutans aren't his type.

"He chases them, or ignores them, but he doesn't do what he should do," said a spokeswoman for the park.

Instead, Sibu fancies his female keepers, especially blondes. That, the spokeswoman said, was common for orangutans but Sibu has a fetish for tattoos, harking back to a heavily tattooed keeper who reared him.

"orangutans have special interests in special subjects. Sibu happens to like tattoos," she said.

The park hasn't given up on Sibu, 31. He showed an amorous interest in a female Orangutan while living in England and keepers hope he will find love when reunited with her in a new enclosure in Chester, England.