I killed one of those centipedes in the bathroom. I don't think the one posted or the one I saw was the giant variety but no one wants them crawling around.
Generally wild roos will not come near you. If they see you even from half a mile they will stand still & then hop away to safety.
Sure if you get close enough to hug one for some reason you could get a belly full of holes.
Worst for me & my parents was the eastern brown snake. They can be very aggressive & if they think they are cornered or in danger they will charge & attack. The bite is very deadly & you better get anti venom within a half hour or you would likely die.
That's not an easy feet when you are 30 minutes from the hospital & perhaps alone without transportation.
Moms cat was mutilated & could not be saved by some feline or rodent with huge buck teeth. I don't know what it is but it ate half of the cats face. It roams wild. We used to have guaranas & they would steal a cat too...not exactly the thing you would want in your yard.
Last the thing that spooked me was this thing that hissed in the grass. Moms yard would be maybe 2 feet in grass & I would have to go out to get wood or just walk around & would hear it. Not sure what it was but I always retreated from the area I was approaching.
Bug or snake I don't know but was not about to find out.
Definitely not the giant centipede- I don’t live where they do.
Lol we currently have a brown snake that’s regularly visiting our back door area for some reason which has me being extra cautious as he’s shedding and they are cranky when shedding- last year we had two different ones at different times in the front yard till the silly neighbors saw them and killed them

They will always take off unless startled or cornered- they don’t charge you in my experience. I once was nearly bitten by a red belly black snake which my grandfather did sadly kill before it struck me- I nearly stood on it and neither of us could safely retreat, I kept that dead snake in a huge glass jar/bottle filled with metho for years. In my experience they will get away if they can and as we know we have them in the yard (country, big unused paddock behind our house) we make lots of banging stomping noises which usually moves them on from the area you’re in.
Roos- totally depends where you are as to how tolerant or accepting of people they are.
The horse riding school that I used to work at and round horses up for had many reds and greys that weren’t interested nor frightened of people at all- the largest red male would front you (while on horse back) and stand higher than me on the horse and he’d grunt a horrid sound which was basically warning me that I was in his area- I would just turn around and go a different route to find all the horses.
There’s a park near the Grampians (national park) that used to have both wild cockies and Roos that would come up to people to steal food- they’re a definite danger at times and there’s signs telling tourists not to feed them. I had a few layers of winter clothing shredded from behind by a small grey roo at an animal encounter wildlife park when I was about 10, the big reds have been known to wrestle/fight with people quite often- not unheard of at all.
Goannas although beautiful and fascinating can get quite large and also will be scary and aggressive if they want your food or feel cornered, they’re very strong and fast! My guess with the hissing in the grass would be goanna or other large lizard- snakes here will hardly ever stand their ground so to speak.