bulldog ant
(also ‘bull ant’, ‘jack-jumper’ (myrmecia))
a bulldog ant’s head
a kind of ant – relatively large; grows up to: smallest 15 mm, the largest 40 mm; feeds (eats) on — (adult) honeydew, seeds, fruit, nectar, (larvae) small insects, such as bees, flies, etc. brought by the worker ants; about 90 species found in Australia These ants are very aggressive with powerful stings and strong jaws (mandibles). Its sting (prick) is very painful and should be treated immediately.

