Police are asking for public help to locate two reptiles stolen from an animal sanctuary in Warkworth.

A 17-year-old male leopard tortoise and an 8-year-old female green iguana were stolen from Ti Point Reptile Park last week.

Warkworth Police Station Officer in Charge Sergeant Dan McDermott said the incident was believed to have occurred sometime between 19 and 20 March.

"Our teams have attended the address and our investigation remains ongoing to locate those believed to be involved.

"However, police are now appealing to the public for their help as concerns grow for the welfare of the animals taken."

McDermott said those who took the animals may attempt to sell them illegally.

The tortoise stolen from Ti Point Reptile Park. Photo: Supplied / Police

"We are concerned that these animals aren't getting the appropriate care and there may be attempts to sell them on the black market.

"The best thing anyone involved can do is return the animals immediately to the Reptile Park."

He said with information was asked to contact Police via 105, and reference file number 240320/8108.

The leopard tortoise is the fourth largest tortoise in the world and it could reach a maximum weight of up to 40kg, but generally weighs between 10kg and 15kg.

The green iguana is native from southern Brazil and Paraguay, with an adult female typically weighing 1.2 to 3kg.

Ti Point Repitle Park Manager Mike Chillingworth said they were concerned for the animals, which were not suitable as pets.

"The tortoise has been at the park since he was around two, and the iguana was hatched here.

"We would appreciate any information or assistance which would lead to their return," Chillingworth said.

This story was originally published by RNZ