1 Certain parts of the brain shrink, especially the prefrontal cortex (an area at the front of the frontal lobe) and the hippocampus. 2  Both areas are important to learning, memory, planning, and other complex mental activities.
A strong work ethic dog, the Bergamasco is a big fluffy breed with distinguishing characteristics of its coat. The hairs seem to be âdog hairs, âgoat hairs, while wool can also be noticed. These hairs combine to form black or gray mats which grow throughout Read More. Image.
Siberian Husky Chukcha, Chuksha, Husky, Icee, and Sibe. Ranging from medium to large in size, the Siberian Husky is a working dog breed that was developed in Siberia. A member of the Spitz family, the Siberian Husky has a double coat of thick fur, perky ears, and unique markings.