花生漫畫人物動詞之謎?

我這陣子硏究了各個角色speech bubbles 的動作用詞(動詞)，中文翻譯一律用「説」，但發現英文原著是比較仔細：
Snoopy and Woodstock 以外人類：thinks / says / asks / answers / adds / announces / tells / replies / explains / exclaims / shouts / continues / suggests / yells/ complains/ talks
Snoopy: thinks
Woodstock: speaks