Brake fairly hard.
I nearly hit a pheasant on track at Cadwell, came round Barn, onto the start/finish straight, flat out, starts walking into the track a few hundred meters up the road.
I didn’t fancy hitting it and having a broken bumper/radiator/oil cooler or windscreen!
Over here with Kangaroos/Wombats etc, hit them straight on with the middle of the car and don’t swerve, more chance of having an accident that way. Only hit one wombat up to now luckily I was in the work Land Cruiser and it bounced off the diffs and didn’t do any damage.
The car two lanes over from me on the motorway in Sydney cleaned up a roo once though when I was coming back from the airport. That was an eye opener as it was in my lane only seconds before!