How can I notify whether my dog loves me?
Signs of confidence: erect stance (standing tall), tail up, tail wagging contained by a slower sweep, ears pricked up or relaxed, direct look; relaxed, smaller pupils.
Signs of fear or concern: lowered stance, tail down or tucked under, tail wagging within a quick, frantic buzz; looking away or turning head absent to look so that whites of eyes show ("whale eye"); dilated pupils. Dogs often bark out of fear, surrounded by an attempt to keep a distance between themselves and the Big Scary Thing, especially if they are cornered, fenced contained by, or on a leash.
Dogs that are aroused will often have their hair stand on cease, usually the "hackles," the areas over the shoulders and just before the tail. This doesn't necessarily have it in mind aggression, just that they are on high alert. Some dogs get "raise hackles" more easily than others; it's like some people who return with red in the face very glibly.
Dominant body postures: Standing over another dog, standing tall, hooking the dominant dog's chin or paw over another dog's shoulders, calmly accepting other dogs licking at their lips; staring. Some confident, dominant dogs will roll on their back, exposing their bellies, in an attempt to reassure a more shy or submissive dog, or to get that other dog to play. They will be relaxed when they do that, and usually still look the other dog contained by the eye. Sometimes mounting ("humping") another dog is a sign of dominance, but not always; this often-misunderstood gesture can also be used by a lower-ranking dog to try to demonstrate his allegiance with a higher-ranking animal
Play and Play Invitations
Since dog-dog play is intensely similar to serious things like fighting, hunting and reproducing, dogs have suitable ritualistic ways of demonstrating that their intentions are peaceful and fun-loving. Dog play is often initiated by a play invitation like a play bow or paw the air (especially with puppies), and it seems to articulate, "None of the biting, stalking, or humping I'm about to do is serious, this is just fun, OK?"
Even when dogs play very roughly, they are generally fairly relaxed; their lips usually cover their teeth (not drawn hindmost in a snarl). Dogs often bark surrounded by play; this will usually be higher-pitched than that same dog's fear-bark or warning-bark.
Sometimes dogs will mount each other in play. They are recurrently excited, but not in a sexual way, and it seems to be a instrument to bond. It is occasionally a show of dominance, but not always. Some dogs appear to mount high-ranking dogs in an attempt to find their place in a group to be exact much more complicated than a straight-line hierarchy.
Stress and Calming Signals
Dogs can feel stressed in situations of frustration or misgivings (including during class or learning a new task). Look for clusters of stress signs: Shaking, whining, "submissive" urination, ears stern, pupils dilated; rapid panting with corner of mouth pulled back; tail down; body lowered; sweating through paw pad, scratching at self; sudden interest in sniffing; yawning; blinking eyes; licking of lips or snout, or stretching tongue forward; looking away or turning head away; shaking body. Frustrated dogs commonly bark (this is especially seen surrounded by "fence fighting", when two dogs on opposite sides of a fence yelp at each other; another easily-observed example is dogs in a shelter watching other dogs walking by; dogs that must pass respectively other on-leash often bark in frustration).
Signs of aggression include: Stiff legs and body; growls, lowered boss; ears "pinned" back close to the head; eyes narrow and fixed intently; mouth sometimes drawn back in a snarl; "hackles" (hair along back, particularly over the shoulders and rump) up and erect; tail straight out, and intense stares (pupils may be fully dilated or shut!).
How to React
When watching your dog interact with others, the general rule is to let the dogs want what is and what isn't appropriate. Butt-sniffing, rough playing, barking in each other's ears, mounting, and other movements that dogs do would not be acceptable in human company, but are perfectly common dog behavior.
BUT, if you see your that your dog's actions are annoying, scaring, or angering another dog, it is your responsibility to do something more or less it. Often distracting your dog by calling him away or squirting him lightly with dampen (this acts as a shoulder-tap, not a punishment!) is enough. If your dog is too excited or intense, take him a few foot away from the action for a light-hearted but calming time out. This is NOT punishment, it's a cool-down interval.
bestow your dog in a room by itself. make sure it see you walk out the door...if it starts whining within 5 min., it loves you.