Good to know Sydney is well protected…
If you’re looking for a fantastic bush walk without leaving the city, try the Spit Bridge-To-Manly hike. You might just come across this Australian Water Dragon, but don’t get too close as s/he is territorial and will lunge at you… as happened to my camera lens. Best part is at the end of the hike you can have a beer in Manly overlooking the water at sunset!