These snakes aren’t as aggressive as many, but you’re more likely to encounter one in an urban area like Sydney. A good rule of thumb when encountering a red-bellied black snake is not to get too close to them, and they probably won’t bite you.
Their bites are rarely fatal, but that doesn’t mean that they’re not painful. Their venom is quite toxic, and if you get bitten, you may experience bleeding and swelling at the bite site, nausea, vomiting, headache, abdominal pain, diarrhea, sweating and severe tissue damage.