A wildlife park at Cradle Mountain has made more room for the endangered Tasmanian devil.

The privately-owned park is home to 25 devils and has just spent $200,000 on new fencing and infrared cameras.

It is only a fraction of the 30,000 estimated to be in the wild, but the extra security will protect them from devils carrying the facial tumour disease.

Owner Wade Anthony says while researchers look for a cure, healthy groups of devils are growing around the country.

"The insurance population's doing really well, we have a target number of effective animals and that may mean we have up to 1500 animals in captivity so that number's growing every year so we're needing more and more spaces to house these devils," said Mr Anthony.

Employee Chris Coupland says the new measures are all about breeding a healthy new population.

"Gives us the opportunity to manage the species, create an insurance population and bring in enough of the genetic variation in the wild," he said.

The park is hoping to add eight devils and more enclosures in November.