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 Largest Breed is The Old English Mastiff is the LARGEST breed of dog in the world. .They can weigh anywhere from 110 pounds to the 343 pounds. Zorba,an English mastiff ,held the world record of the world's largest dog.my was right about Zorba. He was recorded as being the worlds largest dog. He was a Old English Mastiff and weighed 343 pounds and was 8 feet 3 from nose to tail. The tallest Dogs are the Wolfhounds. The worlds smallest dog is named Danka.