Dragon has three perks, vampire has six (three for bloodstream and three for teeth), Werewolf doesn't have a real racial perk. Though the lycanthropy will always stay even if it's dormant because you're not a wolf.
The easiest way is too look it up in the source code
Also if you have two races the one that's the lowest in the definition list will count (That usually means the newer race) So for example Dragon is one of the oldest races and if you mix in any other race you won't be listed as a dragon any more.
Oh and a nice thing I noticed recently. Heroism works with the two magical soulskills. Do get it, it really makes a difference against bosses and giants.
The easiest way is too look it up in the source code
Also if you have two races the one that's the lowest in the definition list will count (That usually means the newer race) So for example Dragon is one of the oldest races and if you mix in any other race you won't be listed as a dragon any more.
Oh and a nice thing I noticed recently. Heroism works with the two magical soulskills. Do get it, it really makes a difference against bosses and giants.