Frenchies have a stockier and heavier body type, leaning toward the bully breeds, while Bostons lean more towards terriers and have a lighter bone structure.Bostons are more energetic compared to Frenchies. They are agile and have a comparable temperament to Frenchies, and are similarly great with kids and other dogs. However, Bostons are generally more high-spirited than Frenchies. Read more about Boston Terriers here.