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.
This jumbo-sized dog breed is a mix of Newfie, longhaired Saint Bernard, and Great Pyrenees. He needs a good deal of exercise, attention, and space, but with the right owner, he can be a friend like no other. With his lion-like looks and deep bark, he makes an intimidating watch dog. See below for complete list of Leonberger characteristics!