The backyard dog is fast becoming a thing of the past. Decades ago, it was common for dogs to live their entire lives outside in suburban and urban yards. But as our knowledge of canines has evolved, we've learned that staying outside 24/7 can be hazardous for a dog's health.ecades ago, it was common for dogs to live their entire lives outside in suburban and urban yards. But as our knowledge of canines has evolved, we've learned that staying outside 24/7 can be hazardous for a dog's health.
Rear-wheel drive (RWD) typically places the engine in the front of the vehicle and the driven wheels are located at the rear, a configuration known as front-engine, rear-wheel drive layout (FR layout). The front mid-engine, rear mid-engine and rear engine layouts are also used.
Many car buyers are confused by the matter of which wheels actually drive the vehicle, and which is best for their particular needs. There are four main choices: front-wheel drive, rear-wheel drive, four-wheel drive or all-wheel drive. Each has its advantages, and no single layout is best for all situations. It will help to understand a device known as the differential.