Why is my dog's lip swollen on one side, yet he seems normal?
Toby is a very handsome man! If the area continues to bother him (if it stays swollen and he doesn't want you touching it) I recommend making an appointment to have him seen by a vet for diagnosis and treatment of the issue. If the swelling spreads elsewhere, he develops hives, or he begins to have any difficulty breathing, have him seen by a vet right away, as this could be a sign of a serious allergic reaction. If you are using plastic food or water bowls I recommend switching to stainless steel or glass and washing them thoroughly every day, as sometimes plastic bowls and the bacteria that can live on them can lead to irritation of the lips/ chin. If you think Toby may have chewed on an electrical wire and that may have caused the lesion on his lip, let your vet know right away, as this can be very painful.
Updated on September 23rd, 2025