Several dogs have earned a place in history . Modern medicine attributes King George 's apparent madness to porphyria , a genetically transmitted disease that researchers trace back to the Scottish Stuarts . A Soviet dog named Boris rode into space history . A dog stood between Alexander the Great and a charging horse . A dog got final touches on a composer 's music .
Several dogs have earned a place in history . A Soviet dog named Boris rode into space history . A dog stood between Alexander the Great and a charging horse . A dog got final touches on a composer 's music .