I know a bunch of guys that have hit roos. Roos and utes are probably the two biggest dangers on our morning rides.
We have started seeing deer in Eltham in the mornings. Saw a massive Stag with a full rack a couple of months ago.
Wombats are pretty bad on the trails, a couple of mates have hit them but I haven't seen one yet.
I shaved the arse of a rabbit with my front tyre at about 45km/h once.
Just missed a snake returning from Baw Baw once. Thought it was a stick, then a dead snake as I got closer. Got a bit of a shock when it lifted it's head as I slipped past it.