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.
Some big, fluffy dog breeds are the chow chow, the samoyed, the standard poodle, the old English sheepdog and the keeshond. The abundant, fluffy coats of these dogs require constant care. Keep Learning.
The German Shepherd is categorized as a large sized dog whereas the Belgian Malinois is a medium sized dog. People generally have a misconception that the Malinois is more aggressive than the German Shepherd. In truth however this is not the case at all.