A predator isn't always a squirrel issue for surviving modern issues such as humans' cars cutting trees down deforestation and even the weather is something that can cause a squirrel to go awry. Humans are destructive sometimes, careless, and rude creatures. Therefore, the cutting down of trees and just messing up a squirrel's home can cause the squirrel to be vulnerable to the world and nearby enemies. When a squirrel is vulnerable, its death can be caused by cars, people, trains, and even trees themselves. Squirrels usually die from cars trains, and any automobile it's pretty common and very unfortunate.