[amag]

When I learned t drive I was instructed not to mind smaller critters as the avoidance maneuver (steering away one way or the other or heavy breaking) is more likely to cause a serious accident than the collision with the small critter.

[lb1lf]

Unless, of course, you are the small critter.

(When in driving school, I was taught to ignore anything smaller than a reindeer - but assure whoever showed up in distress after I'd put a set of tire marks over their pet's back that I'd tried my best to avoid it.)

[kalleboo]

True. You also don't want it avoiding a plastic bag that's floating across the road

[mac01021]

You needn't swerve but there's no harm in braking.