It was an expressway. There were no lights other than cars. You’re not wrong, had a human sprinted at 20mph across the expressway in the dark, I’d have hit them, too. That being said, you’re not supposed to swerve and I had less than a second to react from when I saw it. It was getting hit and there was nothing I could’ve done.

I am neither blaming you nor critiquing your actions. In fact I agree that we should not swerve. I was just making an observation that driving slightly slower in low visibility might help by giving you more time to notice an obstruction and brake while provide also providing more time for the obstruction to react and clear the road. At least very least, people might slow down enough so that the crash is no longer fatal to the person or animal being crashed into

Nobody is asking you to go at 35 mph. But going 60 mph instead of 80 mph means that your stopping distance will be nearly half and you will have almost twice the amount of time to react.

https://www.automotive-fleet.com/driver-care/239402/driver-care-know-your-stopping-distance

Maybe drive a little slower at night. If you can’t spot and react to animals on your path, you won’t able to react when it’s a human