I remember reading that back in the day North America used to have more trees and dense vegetation that squirrels rarely touched the ground since that was more dangerous for them, so they would use the trees like highways.
I remember reading that back in the day North America used to have more trees and dense vegetation that squirrels rarely touched the ground since that was more dangerous for them, so they would use the trees like highways.
Tree squirrels are big on digging, they bury food for later retrieval and eat a good amount of terrestrial foods. You regularly see them on the ground even in dense forest. Flying squirrels stick more to the trees but their gliding ability means dense forest is not a requirement for avoiding the ground.