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.
Top 10 World's Biggest dog breeds in the world. These dogs are just massive! Subscribe to support more videos! Music used: Dustsucker by Jens Kiilstofte https://machinimasound.com/music/dust... Licensed under Creative Commons Attribution 4.0 International (http://creativecommons.org/licenses/b...