Hamilton City Council is looking for external help for a wider review of the city's zoo so assurances can be given about its operations.
It's the fifth review announced since a tiger last month attacked and killed senior keeper Samantha Kudeweh.
Investigations into Ms Kudeweh's death are already being conducted by the council, the Ministry for Primary Industries, WorkSafe and the coroner.
But the council's chief executive, Richard Briggs, said a new external review of the whole zoo could complement those already under way.
He said given recent events it was timely to conduct such a broad investigation.
"We're still working out the scope ... we haven't contracted anyone to do that review yet."
Mr Briggs said the aim was to find the best means of undertaking a broad review across the zoo.
"I'd be looking for a very capable and credible zoo expert to be part of the team, whether or not it's one contracting company who subcontracts or ... one firm that has all of the necessary skills."