Thought this was an interesting read. Lots of good info. http://dogs about.com/od/dogtraining/tp/dogbodylanguage.htm
Reading Your Dog's Body Language Knowing how to read your dog's body language is the key to understanding your dog, assessing her attitude, and predicting her next move. Because dogs are non-verbal - their body language does the talking for them. Vocalization actually takes second place to a dog's body language. Once you learn these basic types of dog body language, spend some time observing dogs interacting with people and other animals in various situations. Understanding of dog body language can also help protect you and your dog from dangerous situations as well as aid in training or identification of common behavior problems Confident The confident dog stands straight and tall with her head held high, ears perked up, and eyes bright. Her mouth may be slightly open but is relaxed. Her tail may sway gently, curl loosely or hang in a relaxed position. She is friendly, non-threatening and at ease with her surroundings. Happy A happy dog will show the same signs as a confident dog. In addition, she will usually wag her tail and sometimes hold her mouth open more or even pant mildly. She appears even more friendly and content than the confident dog, with no signs of anxiety. Playful A playful dog is happy and excited. Her ears are up, eyes are bright, and tail wags rapidly. She may jump and run around with glee. Often, a playful dog will exhibit the play bow: front legs stretched forward, head straight ahead, rear end up in the air and possibly wiggling. This is most certainly an invitation to play! Submissive A submissive dog holds her head down, ears down flat and averts her eyes. Her tail is low and may sway slightly, but is not tucked. She may roll on her back and expose her belly. A submissive dog may also also nuzzle or lick the other dog or person to further display passive intent. Sometimes, she will sniff the ground or otherwise divert her attention to show that she does not want to cause any trouble. A submissive dog is meek, gentle and non-threatening. Anxious The anxious dog may act somewhat submissive, but often holds her ears partially back and her neck stretched out. She stands in a very tense posture and sometimes shudders. Often, an anxious dog whimpers, moans, yawns and/or licks her lips. Her tail is low and may be tucked. She may show the whites of her eyes, something called whale eye An anxious dog may overreact to stimulus and can become fearful or even aggressive. If you are familiar with the dog, you may try to divert her attention to something more pleasant However, be cautious - do not provoke her or try to soothe her. Fearful The fearful dog combines submissive and anxious attitudes with more extreme signals. She stands tense, but is very low to the ground. Her ears are flat back and her eyes are narrowed and averted. Her tail is between her legs and she typically trembles. A fearful dog often whines or growls and might even bare her teeth in defense. She may also urinate or defecate. A fearful dog can turn aggressive quickly if she senses a threat. Do not try to reassure the anxious dog, but remove yourself from the situation calmly. If you are the owner, be confident and strong, but do not comfort or punish your dog. Try to move her to a less threatening, more familiar location. Dominant A dominant dog will try to assert herself over other dogs and sometimes people. She stands tall and confident and may lean a bit forward. Her eyes are wide and she makes direct eye contact with the other dog or person. Her ears are up and alert, and the hair on her back may stand on edge. She may growl lowly. Her demeanor appears less friendly and possibly threatening. If the behavior is directed at dog that submits, there is little concern. If the other dog also tries to be dominant, a fight may break out. A dog that directs dominant behavior towards people can pose a serious threat. Do not make eye contact and slowly try to leave. If your dog exhibits this behavior towards people, behavior modification is necessary. Aggressive An aggressive dog goes far beyond dominant. All feet are firmly planted on the ground in a territorial manner, and she may lunge forward. Her ears are pinned back, head is straight ahead, and eyes are narrowed but piercing. Her tail is straight, held up high, and may even be wagging. She bares her teeth snaps her jaw and growls or barks threateningly. The hairs along her back stand on edge. If you are near a dog showing these signs it is very important to get away carefully. Do not run. Do not make eye contact with the dog. Do not show fear. Slowly back away to safety. If your own dog becomes aggressive, seek the assistance of a professional dog trainer to learn the proper way to correct the behavior. Dogs with aggressive behavior should never be used for breeding. Reason Dogs Use Appeasement Gestures Turid Rugaas, a Norwegian dog trainer and behaviorist, came up with the term "calming signals" to refer to the appeasement gestures dogs make. This is a fitting term, as most dogs use this type of body language to calm a situation down. Dogs use appeasement gestures when they are feeling stressed uncomfortable, or fearful. Dogs use appeasement gestures such as yawning or lip licking to let a person or another animal know that they come in peace. For instance, a dog who is being approached by another dog may avert his gaze and lick his lips. This lets the other dog know that he has no intention of fighting with him. You may also see your own dog do this if you scold or punish him. The dog is simply trying to communicate that he is no threat to you. Dogs may also use appeasement gestures, or calming signals, to buy themselves some time. My own dog, Toby, is a good example of this. Whenever I begin training Toby to do something new, the amount of scratching he does makes it seem as if he'd spent the morning rolling in a field of poison ivy. The truth is, however, that Toby gets a little stressed or anxious when it's time to learn something new, a feeling most of us can identify with. When he isn't 100% sure what I'm asking him to do, he uses scratching as a distraction. Once he understands the new command, however, the scratching stops (unless he's actually rolled in a field of poison ivy, which is not out of the realm of possibility when it comes to Toby). How to Respond to Appeasement Gestures How you react to a dog's appeasement gestures depends on the situation. In the above example with Toby, the answer was to push right through, using lots of positive reinforcement and a happy tone of voice, until he began to understand what was being asked of him. Once he understands, his anxiety, and thus the appeasement gesture, goes away. If, however, in addition to the scratching, he began to lick his lips and yawn, it would be a fair assumption that he was feeling a higher level of stress than usual. In this case, it's a good idea to step back from what you re doing, and give the dog a chance to relax. The same is true in the case of a dog who offers appeasement gestures in the face of scolding or punishment. Continuing to scold will only increase the dog's stress and anxiety, so it's a good idea to take a step back and find a new way to approach the situation rather than risk making your dog afraid of you. There are also some cases in which anxiety can cause a dog to become aggressive. By no means should you expect that every dog that yawns in the face of a threatening situation is about to bite. You should, however, realize that as a dog's anxiety level builds, so may his feeling for the need to defend himself. If you are approaching a dog you don't know well, and he is offering an appeasement gesture, it's a good idea to back up and give him some time to become more comfortable. This eases the dog's anxiety and keeps you safe from a dog bite at the same time. Lip Licking What It Means Dog trainer and behaviorist Turid Rugaas coined the phrase "calming signals" to refer to lip licking and similar dog behaviors. Lip licking is also often referred to as an appeasement gesture. What it all boils down to is that dogs who are licking their lips feel stressed or uncomfortable about something going on around them that they perceive as a threat. Dogs lick their lips to appease, or soothe, a person or animal they perceive as a threat in order to ward off aggression. An example of this can be seen in dogs who are scolded when their owners return home after being gone all day only to find the dog has had an accident in the house. A dog might not connect the scolding to relieving himself indoors, but instead sees his owner as a threat. The owner may be yelling and looming over him, and so the dog offers an appeasement gesture by licking his lips and averting his gaze. This is the dog's way of saying that he isn't a threat to the person or animal behaving in an aggressive manner. While lip licking is usually considered a submissive gesture meant to prevent aggression from escalating, it is still a sign that a dog is stressed and uncomfortable with a situation. This gesture of appeasement may be a dog's first attempt to stop aggressive behavior (i.e. to stop his owner from yelling at him), but this does not mean that the dog won't become defensive if the aggressive behavior continues. So if you see a dog licking his lips, back off. This will allow him some space to get more comfortable, and at the same time, it can save you from a potential bite from a dog who feels the need to defend himself. Puppy Body Language (most apply to adult dogs too) Understand Silent Puppy Talk Even puppies use dog body language to talk to each other and their owners. Dogs are most highly attuned to puppy body language, and this silent communication is given the greatest weight. Your pup's dedicated observation can make him appear psychiche always hides when a bath is imminentwhen in fact he's simply reacting to non-verbal cues you may be unaware you're broadcasting. That's why when you smile as you reprimand Junior for stealing your socks, the puppy reads amusement rather than reproach, and acts accordingly. Canine language serves to smooth relationships, offering a way for dogs to get along with each other and the people who make up their families. Silent canine communication makes use of the dog's body from nose to tail. The position and movement of his tail, his facial expression, even his posture is telling. Eye Talk Eyes communicate volumes. Droopy eyelids indicate pleasure, and your pup may squint and moan with delight when his ears are rubbed. Alert pups keep their eyes open wide. An unblinking stare is a challenge and shows dominance, while averting the eyes shows canine submission. The pupils of a dog's eyes indicate aggression and imminent attack when they suddenly dilate wide. Avoid locking eyes with a strange dog. Thats a challenge and may prompt him to challenge you back with aggression. Mouth Talk The dog's mouth is also quite expressive. Your pup uses his lips, teeth and even his tongue to communicate. In general, when the lips lift vertically to show the long dagger-shaped canines, the dog is showing aggression or fear. Lips pull back horizontally to show more teeth in a canine grin of submission, which is often used as an appeasement gesture toward a dominant individual. But grabbing the other dog s muzzle or neck with his mouth--with inhibited bite--shows dominance. A flicking tongue signals intent to lick, which when aimed at the face or hands is also an appeasement gesture. The relaxed, happy pup may sit with his mouth half-open and tongue lolling out as he pants. Ear Talk The ears are barometers of puppy mood. The shape of the dog's earswhether erect and termed prick ears or floppy and pendulousalso influence how easy ear language is to understand. For the sake of this discussion, the ear conformation of the German Shepherd Dog will be used. When erect and facing forward, the dog is interested and possibly aggressive The ears flatten against the head by degrees depending on how fearful or submissive the dog feels. Tail Talk Tail talk is perhaps the dog's most obvious signal to people. Again, the conformation of the dog's tail -- from long to docked, corkscrew or curled -- will determine the extent of your dog's tail semaphore. In most cases, a wagging tail is a distance-reducing signal that declares the dog to be friendly. However, what the tail says depends to a great degree on what the rest of the body is doing. Learn more about your puppys tail talk in this article. Body Position Your puppys carriage shows how he feels. Dogs bump, push or lean against people or other animals as a sign of dominance. Extremely bossy dogs may even indulge in body slamming and bowling over the other dog--or person. Erect posture is a sign of confidence typical of dominant dogs, who seem to nearly stand on tiptoe when in the presence of another dog they want to impress. The aggressive dog leans forward toward whoever they want to cow, while the fearful dog leans backward. Dogs also stand or "loom" over top of the dominated individual to show their social position. The more dominant dog will rest his head, chin, and/or paws over the neck or body of the more subordinate dog. Older dogs putting a puppy in his place may grab the muzzle or neck of the other pup to drive home his point, and engage in mounting or clasping behavior. The opposite is true when a dog shows submission. Puppies that feel insecure or recognize others as being in charge try to look small. Dogs cry uncle by flattening their ears, tucking their tail, crouching as low as possible and perhaps offering a paw. Holding up a paw is a placating gesture in prelude to rolling over to expose the tummy. Exposing the tummy, perhaps even urinating in this position or when crouched before the aggressor, is the dog s ultimate sign of deference. Fur Talk Piloerectionfur standing upright along the ridge of his back, called the hacklesmakes the dog look bigger and more impressive. Its not a conscious thing and may happen simply when the dog becomes aroused. Raised hackles can mean serious business or can be a bluff. Both fearful and aggressive dogs raise their hackles. Just Kidding During Play However, dogs may "pretend" to be aggressive to invite play, and indicate it s a game by using exaggerated behaviors, called meta signals. Dogs also can pretend" to be submissive to entice more subordinate playmates to engage in games. How puppies play involves a wide range of behaviors including over-doing it with inappropriate play. All these signals must be read together to place your dog's meaning in proper context. Often, mixed signals may be sent, with the snarling front half of the dog indicating aggression while the back half wags submissively. In general, any sort of fearful or aggressive sign can prompt a bite and should be taken seriously. Communicating submission to a dominant individual reinforces each's position within the family group. For the most part, place is determined simply by posturing alone, and fights are rarely necessary. Well socialized dominant dogs practice chivalry, and let lower-ranking dogs off the hook when they cry uncle. How puppies play depends a great deal on the breed. Socialization and age also influences what games puppies play. It makes sense that sighthound breeds react more to seeing toys move while gripping breeds relish tug-of-war, and terriers like chase, grab and shake games. Canine play is composed of exaggerated and highly ritualized gestures used in doggy communication. That allows dogs to play fight for instance, yet avoid misunderstandings which might result in real fights. How Puppies Play Play behavior begins as early as puppies can toddle aroundabout three weeks of age. Puppies of both sexes may exhibit sexual behavior as early as four weeks of age, mounting each other during play games. Prey killing behavior like pouncing and object shaking is also seen, and the language of dominance and submission is learned. Puppies at these early ages practice being both the top dog and the bottom-of-the-heap, so they learn how to communicate with each other. Temperament extremesa bully puppy or shrinking violet poochexpressed in play by young puppies is not necessarily a good predictor of future status. Temperament tests are more accurate when conducted on older puppies. Social Play Social play is interactive. In other words, social play involves playing with another puppy, the owner or even the cat. Examples of social play include wrestling, biting, play-fighting, and chase games. Puppies begin social play as early as three weeks of age, with play-biting and pawing, and barking. The intensity escalates and becomes more complex as the dog matures. The first play-eliciting gesture seen in puppies is the raised paw. The play bow -- butt end up, front down -- is the classic invitation for a canine romp and is used by older pups and adults, along with barking, leaping forward to nose-poke and then withdrawing, face pawing or licking. Self-Directed Play Self-directed play, such as tail chasing or pouncing on imaginary objects, is thought to be a replacement for social play when a play-partner isn't available. Puppies that indulge in extremes of tail chasing or habitually target invisible objectssnapping at nonexistent bugsshould be checked by the vet. These may be indications of obsessive-compulsive or seizure conditions. Locomotory Play Locomotory play simply means the puppy is in motion. That can involve solo play or include interaction with others. Locomotary play in adult dogs usually involves a pair or group of dogs. But puppies may indulge in games of ghost-tag running, jumping and rolling about when theyre by themselves Object Play Object play is interaction with stuff. Chasing or pawing/grabbing a ball, rag or stick are examples. Some puppies target water and love chasing the hose or sprinkler. "Just Kidding" During Play However, dogs may "pretend" to be aggressive to invite play, and indicate it s a game by using exaggerated behaviors, called meta signals. For instance, the play-bow is a butt-in-the-air with front-end down position where the pup s forelegs dance back and forth to invite play. When your puppy first play-bows, hes telling you that any growls or wrestling that comes after are meant as fun and games. Adult dogs often pretend to be subordinate to a puppywith play-bows or rolling on the backto build up the pups confidence and invite him to play. This "just kidding" game allows lower-ranking pups to practice being in charge with play bites, mounting behavior, and wrestling games. Once the play is over, the higher-ranking dog again assumes his more "mature" behavior that tells the pup to respect his leadership. Dogs also commonly drop toys at your feet--or in front of other pets--to invite play. Inhibited bites using open mouths aimed at legs and paws of other dogs also are common play behaviors. Bad Play Inappropriate play can develop when pups get too wound up or one of the playmates becomes a bully. Normal puppy play encourages taking turns chasing and pinning each other. But bully dogs always end up on top during wrestling and instead of play bites at the legs the bites target the head or neck. Most times, growls during play are normal but if they turn to lower-pitched growls or the puppy-on-the-bottom yelps too much, break up the session until they calm down. Play that seems to always end up on the hind legs may be a warning sign to have pups cool their jets. Some mounting and clasping or thrusting won't be a problem, when these become the norm, play may have tipped over into bully behavior. Play not only is great fun for you and the baby, it teaches important doggy lessons. During play, puppies figure out what is and isn't acceptable behavior, discover how their bodies work, and ways to interact with other animals and the world around them.