The Ultimate Pet: A Pet Rock A pet rock can be as comforting to me as any canine or feline. Some would believe that a man's best friend is a dog. However, living in a confined two bedroom apartment, I do not have the luxury or permission for a forty pound dog to be plopping around. This is why I have found comfort in my pet rock. A pet rock can replace many of the duties, such as a companionship, I can get from a pet dog or cat. When I go shopping for a pet, I look for the appropriate size and color to meet my needs. Some people like big animals, some small. Some animals come in black, brown, white, yell