Ann Arbor, Michigan
Domestic dogs, border collies (Canis lupus familiaris). Adult dog displays the "merle" trait, a gene that differentially expresses the underlying black hair pigment gene. Juvenile dog is 6 months old and expresses classic black and white border collie markings.
Tanya Dewey (photographer; copyright holder; identification), Animal Diversity Web
This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License.
Help us improve the site by taking our survey.