Visitors to the Yellowpinch wildlife sanctuary can see Humphrey curled up in his small house on the ground, or sunning himself on top of his bark shelter.

Christina and Maisie prefer their tree houses, but can still be seen sometimes looking out with inquisitive pink noses.

Named after Chris Humphries, familiar to some for his TV program featuring his Wild Action Zoo, and Macedon, the place where his private zoo is, the quolls have been given to Potoroo Place in exchange for four potoroos.

Spotted-tail quolls only live for three to five years in the wild. 

There are not many left.

A few have been seen in this area over the past 20 years.

Quolls are Dasyurids, a carnivorous marsupial. 

Other Dasyurids include the now-extinct Thylacine, the Tasmanian Devil, Phascogale, Numbat, Antechinus, Dibbler, Ningaui, Mulgara, Kaluta, Planigale, Kowari, Kultarr and Dunnart.

In the past, when quolls were more prolific, they would occasionally be shot for killing a chicken. 

But unlike foxes and cats, who can devastate an entire chicken coup, a quoll will only kill what it wants to eat and is happy to feast on an animal which is already dead and even decomposing. 

The quolls have are kept separately in captivity because their territorial nature could means that they are a threat to each other in a confined situation. 

But staff are listening for Christina to make clicking noises, a sign she is ready to mate.

If that happens, it will be safe to open the door between her enclosure and Humphrey's, and who knows, the pitter pat of little quoll feet may be in their future.