1 Arthritis. 2  Arthritis can cause groin pain, stiffness, or a limp. 3  Back problems. 4  Spine problems in the back near the lower ribs can pinch the nerves that travel through the groin area and cause groin and thigh pain. 5  Spine problems include a herniated disc or lumbar narrowing (stenosis).
Channel islands due to the abundance of the feral pig as a prey species. The previous. lack of an abundant prey species made it difficult for the eagles to establish colonies. Prior to the introduction of pigs, island foxes were numerous on the island.
Mortality in feral hog populations is greatest in the young less than three months of age, mainly due to accident, starvation and predation. Adult mortality is largely due to hunting, parasites, disease and tooth deterioration. Predation by mountain lions, coyotes and bobcats is only a minor limiting factor.