A mouse might survive but a rat does not.
Gravity pulls. Air pushes back. The problem is square cube law.
A rat reaches terminal velocity quickly. It is a heavy thing. Thirty miles an hour or so.
Maybe from 50 feet it don't die. Only badly hurt.
Taken from the top of the great tower. Three hundred meters down.
It breaks the bones on impact. A rat is like a human, muscle and bone. The rat is dead.
It doesn't matter what deck it falls from. The speed soon reaches its maximum. Too much.
A mouse is a different story.
Much lighter. Higher surface area relative to mass.
The air acts like thick cushion. An invisible drag like parachute.
Mouse drops down the same iron shaft and hits the pavement. It is stunned. It walks off.
The bio is a slave to the physics.
A mouse is hopping. A rat breaks. A man is broken. A horse splashes.