The long-tailed dunnart (Sminthopsis longicaudata) is an Australian dunnart that, like the little long-tailed dunnart, has a tail longer than its body. It is also one of the larger dunnarts at a length from snout to tail of 260-306 mm of which head to anus is 80-96 mm and tail 180-210 mm long. Hind foot size is 18 mm, ear length of 21 mm and with ...