English bulldogs are friendly and affectionate with people, making them excellent family dogs.
American bulldogs are more reserved for people and tend to be more aggressive with other dogs.
The English bulldog is stockier and heavier boned than the American bulldog.
The English bulldog is usually black or brown, while the American bulldog can be almost any color.
The most common American bulldog colors are fawn, brindle, and red. English bulldogs can also be tri-colores or have blue eyes. English bulldogs with darker coats tend to have a more distinguished look than those with lighter coats.