Dalmation dog (IMAGE) Lancaster University Caption Pigmentation patterns (including spots, patches, and stripes) result from the interaction of pigment producing cells (called melanocytes) with skin and hair Credit Lancaster University Usage Restrictions none License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.