Dog Boots: are a common way to provide protection for dog's paws. Dog boots are particularly helpful for tough terrain such as hot pavement, icy/salted roads, sharp rocks or other jagged or potentially hazardous terrain. Also boots can provide protection to paws that are already injured or if your dog constantly licks his paws (lick granuloma where a dog'spaw licking can actually cause an infection). Dog Boots provide an obvious and solid protective barrier. More Dog Boot info.
The effective use of dog boots varies somewhat from dog to dog depending on how willing they are to wear the boots, and how willing an owner is to helping their dog adapt to wearing boots.