Dominance represents control and possibility to guide the others; changing and stopping other's actions, both in mental and physical sense. In nature, the most dominant dogs are the leaders. A dog is born dominant and no human is not capable of changing its level of dominance. But it most be kept in control.
Signs of domination
1. A dog puts its body part over another dog's body part.
a) "T" position – very common and one of the most distinct ways to show desire to dominate. Dominant specimen will get close, make a stance on the other dog's side by putting its head on its back, shoulder close to the head, sometimes shoving it forward until the other dog shows signs of submission. Dominant dogs will not submit to that and the fight will occur.
b) Mounting, taking a mating pose is often either variation of "T" position or its continuation. When a dog mounts another dog of the same sex it does not have anything to do with sex or sexual disorientation. Its social meaning stands the same for both males and females since females can do the mounting too. Submissive one will stay put.
c) Placing front legs on the back.
d) Standing over the lying dog.
2. Direct eye-contact. A dog is approaching directly with snout and eyes pointed at another dog.
3. A dog enters another dog's space in order to overtake it.
a) Shoving other animals with its shoulder is sometimes a way for a dominant dog to make its way.
b) Leaning on is a more subtle way than shoving with shoulder. A dog will approach anoher dog an lean on it.
Dominant-aggressive
If a dog is in dominant posture and the body is slightly leaning towards, it means that the dog is ready to attack. It most commonly occurs when two dominant dogs meet and most often at the end of the greeting dance ritual. The hair bristles, movements become slower, assured and confident. Eye-contact is maintained. They will raise their tail often, very high, and wag it fast. Some show more clear signs of waning such as growling, baring the teeth or barking; but the absence of these signs means that they are not ready to attack because silence usually precedes the attack.