Leading animal welfare advocates in Sri Lanka also oppose the move, with legal action taken by organisations in Sri Lanka, who have petitioned the Court of Appeal in an attempt to keep Nandi in the country. The appeal will be heard on October 21.
During the visit to Auckland Zoo, Wickremesinghe appeared baffled when he was shown a giant Weta crawling up zoo keeper Julie Underwood's arm.
Meanwhile, New Zealand is going to open a High Commission in Sri Lanka next year, to cement ties and increase business between the two countries.
Prime Minister John Key made the announcement after meeting with his Sri Lanka counterpart at Government House today.
"Sri Lanka has embarked on a courageous course to rebuild the country after a generation-long civil war, and we are keen to support that process both politically and by growing our strong economic relationship," Key said.
"Establishing High Commissions in Wellington and Colombo in the next few years will help support that process."