What are the 4 types of quolls called?

There isn't a standard classification of quolls into 4 distinct types. However, there are 6 extant species of quolls, and you could categorize them based on size and geographic distribution. Here's one way to group them into four:

1. Large Quolls:

* Eastern Quoll (Dasyurus viverrinus): Found in eastern Australia, this species is the largest of the quolls.

* Tiger Quoll (Dasyurus maculatus): This species is also relatively large and found in eastern, northeastern, and southwestern Australia.

2. Medium-Sized Quolls:

* Spotted-tailed Quoll (Dasyurus geoffroii): Found in Western Australia, this species is smaller than the Eastern and Tiger Quolls.

* New Guinea Quoll (Dasyurus albopunctatus): This species is found in New Guinea and is similar in size to the Spotted-tailed Quoll.

3. Small Quolls:

* Brown Quoll (Dasyurus hallucatus): This species is smaller than the other quolls and is found in Western Australia.

4. Endangered Quolls:

* Queensland Quoll (Dasyurus maculatus gracilis): This subspecies of the Tiger Quoll is critically endangered and found only in Queensland.

Remember, this is just one way to group quolls, and other categorizations are possible depending on the criteria used.