On a biological note, there is a widely held belief that white cats face a larger risk of deafness than felines of other colors. White cats with blue eyes do display a relatively high rate of deafness. However, deafness in white cats, even those with blue eyes, is not universal by any means.
Small white bumps on the lips can be caused by several things, including acne, cold sores, sunburn, allergies, infection, trauma and cancer, according to New Health Guide.
1 A chronically dry mouth could create a sore in the corner of your lips. The causes of dry mouth include dehydration and use of certain medications.  A mucocele might pop up on the inside of your lower lip. It's a rubbery, bubble-like swelling which may look blue.