The lower-case letter Î³ {\displaystyle \gamma } is used as a symbol for: 1  Chromatic number of in graph theory. 2  Gamma radiation in nuclear physics. 3  The photon, the elementary particle of light and other electromagnetic radiation.  Surface energy in materials 1  science. The Lorentz factor in the theory of relativity.
The Social Hierarchy in Herds of Domestic and Wild Horses. Within the band there is a hierarchy with one mare co-leading the band. While the stallionâs role is to protect the harem from predators and other stallions; the dominant mare leads the band to shelter, food and water.
Do herding dogs automatically know how to herd? For dogs, being mankind's best friend may be their happiest job, but one of the most traditional canine careers is that of herding. The herding dog, also known as the stock or cattle dog, was developed to help control and direct herds of cows or sheep out to pasture or back to the barn.