It depends on what is classified as "most dangerous" If "most dangerous" means the leading cause of death, then the most dangerous thing in Australia (according to the Australian Bureau of statistics) is Heart disease, including angina, blocked arteries and heart attacks.
If, however, the question refers to the most dangerous animal, it would be the irukandji jellyfish, which is found in marine waters from the central Queensland coast north. This jellyfish has venom which is 1000 times more potent than that of a tarantula, and 100 times more potent than a cobra's venom. Having said that, however, the box jellyfish (which frequents the same waters) kills faster. The chances of being stung by either of these creatures are very low.
There isn't one single "most dangerous" city in Australia, as crime rates can vary from year to year. However, some cities like Sydney, Melbourne, and Brisbane tend to have higher rates of certain crimes compared to others. It's important to note that overall, Australia is a relatively safe country to live in.
The most dangerous cities in California are Oakland, Oroville, Stockton, Emeryville, Nevada City, Richmond, and Belvedere. This are the most dangerous cites in California.
The most dangerous place in Australia is Sydney 2nd Adelaide 3rd Melbourne
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If the question is referring to tourists, asking what cities of Australia are most popular for tourists to visit, the answer is Sydney and Melbourne. This also happens to be the answer (coincidentally) if you are asking what cities in Australia are the most populous.
Detroit
Yes, it is one of the top five most dangerous cities in the US
sydeny
New Orleans
Belfast
Black Mambas live in Africa, the congo, not Australia.
The black snake.