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.
Pomeranians are very small dogs that average in size between 3 and 7 lbs. Pomeranians originated in Iceland. During that time, they were solid white with thick, heavy coats and reached up to 20 pounds. They were used then as sled dogs.