You may only find a tender area and possibly notice the odor characteristic of deep infection. (michigananimalhospital.com)
Depending on what body part is affected, your dog could be suffering from an ear infection, impacted anal glands or deeper infections within the skin. (cuteness.com)
However, if there is gross contamination or deep infection present, the wound will be left open for topical treatment and to ensure drainage. (cedarbayouanimalclinic.com)