A terrier is a dog of any one of many breeds or landraces of terrier type, which are typically small, wiry, very active and fearless dogs. Terrier breeds vary greatly in size from just 1 kg (2 lb) to over 32 kg (70 lb) and are usually categorized by size or function. There are five different groups with each group having several different breeds.Those doggies are so cute! Enjoy them in our new live wallpaper!