Does one need to Bench Hagomel if they were in a car accident with a deer on the highway at night and everyone walked out fine B”H?
Birkas Hagomel is made when there is a chance of Sakana.
If the deer crashed into the car and there is a chance of Sakana C”V to life, then they would make Hagomel. This is similar to a wall falling on a person.
See S”A A”C 218:9 and Piskie Teshuvos there.