Saw this on the news last night, apparently the roo "lured" the dog to the water.

I'm a bit worried now, I though sharks and jellyfish were enough to think about when in the water, do I have to look out for rabid roos as well?

If you may like to learn some more about this type of animal behavior
here is some reading of Roo and dingo . They are my own observations
and can be read at walkaboutjoe.com/observations.html
Birds and Australian observations, click on 4.9-4.11 and read story 4.10
Dingo's dine on Roo

He's lucky.... the roo could have gutted him easily!

I saw some local feral bogans bring their dog into a state park on the weekend - scared the crap out of a little wallaby.[}:)]

Been there, done that.
A few years back I was having a bit of trouble with the neighbours dogs coming in and bothering our cattle.
One day while sitting on the front porch sipping tea and eating biscuits and watching the grass grow, (I mean that's all farmers do isn't it?) I heard some dogs going off their brains over in one of the paddocks, so I grabbed my camera to go take some pics as proof for the neighbour to show that they were his dogs bothering my cattle. (Otherwise it's "Nah mate. My dogs wouldn't do that. Definitely not my dogs"
Anyway, coming over the hill and scanning the paddock where the racket was coming from, not a cow in sight! Geez! I mean, a few hiundred cows are not that hard to spot.
The racket was coming from one of the soaks where I noticed that the dogs had bailed up a reasonable sized roo into the water.
The dogs were tickled pink because they thought they had the roo cornered in the dam.
The roo was tickled pink because it was about to flunk the dogs on their final swimming lesson. Usually the dogs jump into the water after the roo and the roo moves out into the deeper water. When the water is too deep for the dogs to stand the roo just holds them under. A roo is much taller than a dog so it's a pretty simple operation. Very effective and very common.

Anyway, although the dogs were not my favorite things, I didn't really think they deserved the death penalty so seeing what was about to happen I went over and chased the silly sods off.
Since I had my camera I decided to take a few pics of the nice kangaroo in the water. After all it should be really grateful that I chased the dogs away shouldn't it?
Well apparently not.
As I was on the edge of the soak taking pics, it moved up onto the bank and then jumped around behind me and pushed me and my nice shiny new digital camera into the dam. At the last second I realised what was about to happen but when I went to jump out of the way my boots were stuck in the mud and I couldn't move them. . . F....!!!
I think the large splash and thrashing around scared the roo off because it just looked at me for a second and then bolted.
Unfortunately I don't have any pics of that bit If I did it would certainly win that 'funniest home vids' competition and I would be $10,000 richer)

In retrospect, I was really surprised at how fast the whole situation turned sour.
I suppose the dogs would have been too if it had gone the way it usually does.

I just think its amazing that an animal can evolve a very effective way to deal with a predator in such a short time.

How long have dingoes thought to have been in Australia? 10,000 years? I know it sounds like a long time, but I am still impressed.