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.
Ragdoll cat. The Ragdoll is one of the largest domesticated cat breeds with a sturdy body, large frame and proportionate legs. It is a breed with blue eyes and a distinct colorpoint coat. It is a large and muscular semi-longhair cat with a soft and silky coat.