I reckon you've got it when you mention the ears Eponastill, He [big Western Grey] just doesn't belong there, according to me - he looks like a shadow which shouldn't be there, he doesn't blend with his surroundings and his form is kangaroo-like - also, at that time of day he would be lying down, under a bush - the fact that I was around made him break cover, even though he was at least 500 metres away
No, not sad at all, the topic is interesting [setting up any scientific experiment], and choosing a subject as left field as ABC's would hold the majorities attention, surely.
I agree with you about the variations describing the subject Eponastill - they vary in colour, form and size, which would make me think that there is more than one type of cat out there. The idea of setting a standard which people could compare with, against what they'd seen, would produce groupings which, to some one familiar with largish and extremely largish beasties of that ilk, could home in with their honed skills [see what I did there?]to verify or dismiss certain sightings.
The majority of sightings in Australia of ABC's are seen by country people, who have a fair idea about what they are seeing, or hearing - it's interesting to me that both black and sable cats are seen here, indicating releases or escapes of exotic beasties, with maybe the odd sable feline being possibly marsupial - being either Thylacoleo or Thylacine. Maybe.
As with snakes, they are normally seen in the bush either by their movement, their colour, or, just about standing on them before they move. They usually flee as a whole, just wanting to get away, the same as you and I - there are variations though, the odd cranky species which will chase you. These fellows are usually country specific, Inland, which are mainly the browns, South Australia, being the Taipan and the Tiger, whereas over in the west, just about anything will have a go, especially the duggite [nasty little bastards].
The majority of snakes I've come close to are due to me being quiet,[make lots of noise in known snake territory] and they are happy when I stand still, and let them slither away. There has only been one that caused me grief, and that was a brown that didn't want to share an irrigation channel that I was cooling off in.
In that situation he saw me in the water, while I was maybe fifty metres away, and he did the classic snake pose of standing his first half metre of head and body out of the water, while heading straight for me at a pretty fair clip. I was young and thick and didn't react enough when my mate told me to get out of the water, and make it sharpish like - and so got chased for fifty metres or so once the bugger got out of the canal and hit ground.
Your idea of reacting to everything, in this situation, isn't bad advice at all Eponastill...
A pissed off Tiger on a mates back lawn.