The physical appearance of these dogs is impressive. Just by looking at them, you can tell that they possess tremendous power. They are true athletes with well-muscled bodies. The breed standard recognizes as purebred only those dogs that appear broad and stocky. Long legs and a lean build are highly undesirable in this breed. These dogs move swiftly and confidently.

A distinctive feature of Amstaffs is their very powerful bite. They rank among the record-holders for jaw strength.

Males always look more masculine than females. Their musculature is more pronounced.