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.
The 10 Most Popular Small Dogs Today. 1  1. Pomeranian: The Pomeranian is a very small dog (3 to 7 pounds) that is known for its foxy appearance and curled tail. 2  4. Parson Russell Terrier: As opposed to the first two lapdog breeds mentioned, the Parson is an energetic go-getter.