Gray and red squirrels are among the most visible urban wildlife, facing threats from traffic, predators, and habitat loss that affect individual welfare in city environments.
Squirrels struck by vehicles frequently survive the initial impact with severe internal injuries, broken limbs, and head trauma, dying slowly by the roadside without intervention. Mange causes progressive hair loss, intense itching, and secondary infections that cause suffering over weeks before death. Urban squirrels that become dependent on human feeding lose foraging skills needed for natural survival. Orphaned juveniles separated from their mothers before independence face near-certain death without skilled rehabilitation.