Damage to trunks and stems can result from the gnawing or antler rubbing of wildlife, especially rodents. Deer, not so much, but most damage from squirrels, rats, porcupines and sapsuckers is caused because the targeted trees are in stress and have concentrated sugars to an attempt so treat stressful conditions caused by drought, severe weather change, too much or the wrong kind of fertilizer, being too deep in the ground and compaction or contamination of soil. The solution is the Sick Tree Treatment with the removal of soil from the flare being the most important step.
Pet urine damage
Urine damage - female dog