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.
A strong work ethic dog, the Bergamasco is a big fluffy breed with distinguishing characteristics of its coat. The hairs seem to be âdog hairs, âgoat hairs, while wool can also be noticed. These hairs combine to form black or gray mats which grow throughout Read More. Image.
Considered the largest of all dog breeds, the English Mastiff's name seems to fit its best descriptions: massive. This giant dog breed is all brawn and power on the outside, but deep down it is a lovable, mushy companion--and often a bit of a couch potato! These dogs can top the scales at 220 pounds and be 30 or more inches tall. However, it looks like a large percentage of the weight is in their huge heads.