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Tesla on Autopilot Smashes Straight Through Garage Door, Driver Says
(autos.yahoo.com)
This is a most excellent place for technology news and articles.
If the deer darts in front at the last second it will try to swerve around it, but maybe not too aggressively. Similar to if a car intrudes in your lane. But ya, if its standing in the road in front of you it will just brake.
Edit: Looks like someone did a video of it a couple days ago of swerving to avoid an inflatable dummy someone throws at it, so this is what I'd expect for a deer that jumps in front of it. Some pretty good speed reactions in there.
https://www.youtube.com/watch?v=9KRr9Of46MM
https://old.reddit.com/r/SelfDrivingCars/comments/1u69k79/fsd_reaction_time_testing_45_mph/