The Greek Shepherd or Greek Sheepdog (Greek: Ελληνικός Ποιμενικός, Ellinikós Pimenikós) is a breed of livestock guardian dog from Greece. Thought to be ancient in origin, the Greek Shepherd is very closely related to livestock guardian dog breeds from neighbouring countries; some dogs are believed to be simultaneously claimed to be other breeds as they migrate annually across national borders with the flocks they protect in search of seasonal pastures.
Image credit: Vaggospm, CC BY-SA 4.0
Adapted from Wikipedia, CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Greek_Shepherd