Help! How do I cure my dog's snappishness?

[PonyPup]

Okay, these are the details:
Graham "attacks" Checkers, because he wants to be the alpha. Checkers doesn't cooperate though, and she also fights back because she doesn't accept Graham as the alpha. And you said Bubbles (who's dead. She got hit by a car) is just being a good leader. But she actually submits to Graham! It's weird. It's as if she wants Graham to be the alpha, and when Checkers fights back at Graham, Bubbles "attacks" Checkers because she's like telling Checkers that Graham's the alpha.
And you're asking about Checkers's siblings. Well, they "attack" people by rushing at them and just nipping/biting their leg of foot. I think it's territorial aggression, because they do that when the person's on their territory. But I also think there's something wrong with their brain. Maybe they have sort of a "craze" gene.
Oh, and I think you're right about the fear aggression. I just looked closer at Checkers when one of our German Shepherds (except Coffee. She's not really "scared" of him) goes to her, she just stiffens and shows her teeth, and when one of our Shepherds is lying in front of a doorway or something, and there's a small space to pass through, she passes through that small opening and tries to stay as far back against the wall from the Shepherd. But I read in Understanding Your Dog for Dummies that if your dog is snarling, and its mouth is in a "C" shape, that means it's dominance aggression. If it's pulled back, it's fear aggression. Checkers snarls in a "C" shape. But she also sort of cringes while holding her tail up high. She's showing both fear and dominance at the same time! It's so confusing!
AND I can't get a professional dog behaviorist, 'cause I live in the Philippines, and there aren't really dog behaviorists here!

Oh, sorry if I took so long to reply. I'm just so busy with high school. Oh, and I just wanted to tell you, you're really helping a lot.

[Giselle]

But I read in Understanding Your Dog for Dummies that if your dog is snarling, and its mouth is in a "C" shape, that means it's dominance aggression. If it's pulled back, it's fear aggression. Checkers snarls in a "C" shape.

Nothing in aggression is ever that black and white. What you read is useful information, but it's extremely limited. Aggression and reactivity are almost never quite that simple. When a dog is growling, you're not looking at what letter their mouth makes. You're not looking at the teeth. You're looking at its lips. Are the lips pulled back or are the lips pushed forward into a pucker? You look at its front. Is the dog putting weight on the front legs or is the weight on the back legs? You look at its rear. Is it shifting weight on its haunches or is it tense and ready to spring forward? It's not just the ears, teeth, and tail you're looking at. You're assessing the entire body and the dog's mental/behavioral history. The differences are incredibly minute and an inexperienced person isn't often able to differentiate the physical subtleties. I myself often have difficulty differentiating the subtleties. I usually need a video camera to really precisely see it.

To be brutally honest, you *need* a behaviorist. Because you have so many dogs and are experiencing so much difficulty with at least 3 of them, you really should contact a professional. A behaviorist will help you decipher dog behavior and help you take back control.
Check this out: http://www.dogscoutsphilippines.com/
He is a positive reinforcement/pro-clicker guy, at least from what I can see. Please contact him.