American Staffordshire Terriers descend from bull-and-terrier dogs brought from Britain in the 1800s, and the American Kennel Club recognized them in 1936. They're stocky, muscular, medium-sized dogs, usually 40 to 70 pounds, with a broad head, pronounced cheeks and a short, glossy coat in nearly any color. That coat needs little more than a regular brushing and an occasional bath.
Many AmStaffs are confident, goofy and devoted to their people, and they're often happiest leaning against a favorite person on the couch. They're strong and determined, so training and leash manners matter, and some are selective with other dogs even when well socialized. Dogs vary, so spend time with the one you're considering. In St. Charles the breed isn't singled out by city rules, but landlords and insurers sometimes do, so sort out housing first.