Calming signals is a term conceived by Norwegian dog trainer and canine ethologist, Turid Rugaas, to describe the patterns of behavior used by dogs interacting with each other in environments that cause heightened stress and when conveying their desires or intentions. [1] [2] The term has been used interchangeably with "appeasement signals." [3] [4] Calming signals, or appeasement signals, are communicative cues used by dogs to de-escalate aggressive encounters or to prevent the development of aggressive encounters completely. [5] Calming signals are performed by one dog (the sender) and directed towards one or more individual(s) (the recipient(s)), which could be dogs or individuals of other species, such as humans. [4] When calming signals are ignored, a dog may display warning signals of aggression, and this has the potential to escalate to outright conflict between individuals. [6]
The domestication of dogs by humans has significantly altered the behavioral patterns observed in ancestral species, such as the wolf (C. lupis). [4] Dogs have developed changes in body language, as well as changes in auditory and olfactory displays over the course of some 30,000 years, and many of these modified behavioral patterns, or calming signals, can differ in meaning depending on the intended signal receiver's species. [7] Calming signals can be released by an individual voluntarily, or they can be an involuntary response to environmental stimuli as a result of stress-induced changes to body chemistry, such as the release of an odour from the body when anxious. [7]
In the past, studies on social behavior in wolves have been used to provide insight on social behavior patterns in domesticated dogs. [4] Although the domesticated dog (C. familiaris) share a common ancestor with the wolves and may present certain similarities, distinct differences in morphology and in the environment in which the two species evolved can cause the transpiration of inaccurate conclusions about communication behavior patterns in domesticated dogs when applying knowledge gained by the study of wolves. [4] Thus, the grouping of ancestral and descendant species is not found to be an appropriate method for studying calming signals in domesticated species of dogs. [4]
The threshold for aggressive behavior in domestic dogs varies from that of wolves. [4] Most domestic dog breeds are less likely to engage in aggressive behavior than their ancestral counterparts, and are therefore more likely to display calming signals to defuse conflict. [4] In dog breeds that differ greatly from wolf morphology, like pugs, some visual signals will be absent or highly modified as they no longer have the physical capacity or means to convey these signals. [4] Neoteny can also account for the loss of certain visual signals in domestic dogs and the retention of novel signals over subsequent generations. [4] [6]
Dogs use visual, auditory, and olfactory indicators to communicate with both conspecifics and other species, such as humans. [7] The majority and most well-studied calming signals are visual, and are sometimes accompanied by auditory cues (i.e. a sharp whine accompanying a yawn). [4]
Examples of behaviors classified as calming signals: [1] [2] [4]
The behavioral patterns listed above have the potential to be used as calming signals, but are only classified as such in the appropriate context. [4] [6] For example, a dog lying down when resting would not be considered a calming signal, but a dog lying down when approached by another dog would be considered a calming signal. Thus, calming signals are context-dependent behavioral responses to a dog's environment. [6]
Not all calming signals have the same efficacy in de-escalating aggressive encounters or conveying a dog's intention and dogs preferentially display certain calming signals over others depending on external factors such as distance between the sender and the recipient of the signal, and familiarity of the recipient to the sender. [4] [6] A dog is most likely to display a calming signal when it is directly interacting with another dog and when the dogs are separated by a small distance. [4] Lip-licking is a calming signal whose use is noted to increase in frequency as the distance between the sender and the recipient decreases. [4] [6] However, sniffing the ground and yawning, which are both considered calming signals, are most often displayed when the distance between the sender and the recipient increases. [4] Calming signals that are most commonly displayed by dogs overall are freezing, licking of the nose, and turning of the body away from the source of the escalation (i.e. a dog baring its teeth or growling). [4]
Domestic dogs display interspecific signaling, specifically towards humans. [6] [7] Because domestic dogs co-inhabit the same environment as their owners/handlers, humans are their principle social partners, [6] and there is a great level of interaction between the two. [7] Licking of the lips and looking away are calming signal-categorized behaviors that are used by dogs in both conspecific and heterospecific interactions, and in both instances are thought to be used to appease the recipient. [6] Lip licking is also used as a greeting behavior to establish a peaceful basis for future interactions. [6] [8] [9] [10] [11] [12]
Understanding canine calming signals is crucial to experiencing positive interactions with dogs. [14] [15] Children under the age of six are least likely to correctly interpret auditory and visual calming signals displayed by dogs and, in the US, younger children have a greater probability of becoming victims of a dog attack. [14] In cases where children cannot appropriately interpret and respond to calming signals, the dog-human interaction is likely to escalate, and the dog may exhibit aggressive behaviors, such as biting. [14] Hugging can feel confusing and threatening to dogs. Therefore it is a common cause of dog bites in the face of young children. [16]
Calming signals are often used by dogs post-conflict to diffuse aggressive behaviors and to regain a peaceful social environment. [17] Dogs have evolved peacemaking social mechanisms to alleviate, prevent, or resolve conflicts. [17] Some of these behavior mechanisms are calming signals. [1] [2] [4] [17] Social groups of dogs display two types of post-conflict calming signal behavior patterns: the two opponents of the conflict display the calming signals (reconciliation), or between a third-party member of the social group and one opponent (third-party initiated post-conflict affiliation). [17]
Familiarity and distance between two individuals affects the frequency of use of calming signals and the types of calming signals used. [4] [6] Calming signals are used between dogs to prevent the escalation of an agonistic encounter. [3] [6] Intraspecific calming signals can be voluntary, such as licking the lips, or involuntary, such as the release of odors from glands during high-stress interactions. [7] In both cases, the recipient receives the signal, understands its meaning, and acts on this information, often taking action to mitigate the stressful environment by changing their body language or demeanor. [4]
Calming signals are not displayed in intraspecific interactions when the level of aggression or threat exceeds the aggression threshold of the sender. [6] In these cases, dogs are more likely to rely on submissive behaviors than calming signals. [3] [6] Calming signals are only useful to a dog when there is a great enough probability that the direction of the encounter can be changed to de-escalate aggression. [6]
Licking is the action of passing the tongue over a surface, typically either to deposit saliva onto the surface, or to collect liquid, food or minerals onto the tongue for ingestion, or to communicate with other animals. Many animals both groom themselves, eat or drink by licking.
Dog communication is the transfer of information between dogs, as well as between dogs and humans. Behaviors associated with dog communication are categorized into visual and vocal. Visual communication includes mouth shape and head position, licking and sniffing, ear and tail positioning, eye gaze, facial expression, and body posture. Dog vocalizations, or auditory communication, can include barks, growls, howls, whines and whimpers, screams, pants and sighs. Dogs also communicate via gustatory communication, utilizing scent and pheromones.
Dog training is a kind of animal training, the application of behavior analysis which uses the environmental events of antecedents and consequences to modify the dog behavior, either for it to assist in specific activities or undertake particular tasks, or for it to participate effectively in contemporary domestic life. While training dogs for specific roles dates back to Roman times at least, the training of dogs to be compatible household pets developed with suburbanization in the 1950s.
Dog aggression expressed by dogs is considered to be normal behaviour and various types of aggression are influenced by a dog's environment and genetic predisposition. Dogs commonly display possessive aggression when defending resources or themselves.
A bark is a sound most often produced by dogs. Other animals that make this noise include, but are not limited to, wolves, coyotes, foxes, seals, frogs, and barking owls. "Bark" is also a verb that describes the sound of many canids.
The alpha roll is a dog training technique that is considered outdated by many modern-day dog trainers. The theory behind the training method is that dogs are hierarchical animals. The technique is used to teach the dog that the trainer or owner of the dog is the pack leader. Methods include when a dog misbehaves to pin the dog on its back and held in that position, sometimes by the throat.
The dog is a domesticated descendant of the wolf. Also called the domestic dog, it was domesticated from an extinct population of wolves during the Late Pleistocene, over 14,000 years ago by hunter-gatherers, prior to the development of agriculture. The dog was the first species to be domesticated by humans. Experts estimate that due to their long association with humans, dogs have expanded to a large number of domestic individuals and gained the ability to thrive on a starch-rich diet that would be inadequate for other canids.
Dogs, as with all mammals, have natural odors. Natural dog odor can be unpleasant to dog owners, especially when dogs are kept inside the home, as some people are not used to being exposed to the natural odor of a non-human species living in proximity to them. Dogs may also develop unnatural odors as a result of skin disease or other disorders or may become contaminated with odors from other sources in their environment.
Growling is a low, guttural vocalization produced by animals as an aggressive warning but can also be found in other contexts such as playful behaviors or mating. Different animals will use growling in specific contexts as a form of communication. In humans, low or dull rumbling noises may also be emitted when they are discontent with something or they are angry, although this human sound is often termed "groaning" & "grunting".
Dog behavior is the internally coordinated responses of individuals or groups of domestic dogs to internal and external stimuli. It has been shaped by millennia of contact with humans and their lifestyles. As a result of this physical and social evolution, dogs have acquired the ability to understand and communicate with humans. Behavioral scientists have uncovered a wide range of social-cognitive abilities in domestic dogs.
A shock collar or remote training collar, also known as an e-collar, Ecollar, or electronic collar, is a type of training collar that utilizes electronic stimulation to the neck of a dog, at high levels this can cause pain or be extremely uncomfortable or other parts of its body, depending on the desired outcome. These collars incorporate a radio-controlled electronic device and are worn around the dog's neck. Many European countries view shock collars as animal cruelty and have banned their use. The mechanism behind shock collars involve inflicting varying levels and duration of pain, which generates fear and serves as a deterrent for undesirable behaviors. Some models of shock collar models offer additional features such as a tone or vibrational setting that can be used as an alternative or in combination with the shock. Certain advanced collars include Internet mapping capabilities and GPS functionality to track the dog's location or notify the owner about its whereabouts.
Laughter in animals other than humans describes animal behavior which resembles human laughter.
Socialization of animals is the process of training animals so that they can be kept in close relationship to humans.
Separation anxiety in dogs describes a condition in which a dog exhibits distress and behavior problems when separated from its handler. Separation anxiety typically manifests within minutes of departure of the handler. It is not fully understood why some dogs suffer from separation anxiety and others do not. The diagnosis process often leads to a misdiagnosis as it is difficult to differentiate from other medical and behavioral problems. The behavior may be secondary to an underlying medical condition. With chronic stress, impairments to physiological health can manifest. Increased stress in the dog alters hormone levels, thus decreasing natural immunity to various health problems. Separation anxiety can be treated with systematic desensitization and, if necessary, medication. Ignoring or punishing the dog, leaving them to "cry it out" does not solve separation anxiety and can damage the mental health of dogs.
A free-ranging dog is a dog that is not confined to a yard or house. Free-ranging dogs include street dogs, village dogs, stray dogs, feral dogs, etc., and may be owned or unowned. The global dog population is estimated to be 900 million, of which around 20% are regarded as owned pets and therefore restrained.
Human–canine bonding is the relationship between dogs and humans. This relationship can be traced back to at least 15,000 years ago, to the Bonn-Oberkassel dog, who was found buried alongside two humans. For centuries, dogs have been considered man's best friend. This is most evident in Western countries, such as the United States, where 44% of households have a pet dog.
An interspecies friendship is a nonsexual bond that is formed between animals of different species. Numerous cases of interspecies friendships among wild and domesticated animals have been reported and documented with photography and video. Domestication of animals has led to interspecies friendships between species that would never naturally exist together. In many cases of interspecies friendship, the species are not normally seen together, and sometimes, one is of a species that ordinarily preys on the other in nature.
Dog-like cat is a term in popular culture that refers to specific breeds of domestic cats that have unusual behavioral tendencies that are reminiscent of young domestic dogs. These are within the scope of feline behavior, and may be enhanced through selective breeding. These behaviors, not specific to any breed, include following people around from room to room, the desire to receive frequent moments of physical affection such as being held and petted, a lack of aggression toward some fellow animals, and a placid nature. Certain owners may successfully attempt to train their cats to perform on command, such as via clicker training, akin to canines and other domesticated animals.
Turid Rugaas is a Norwegian dog trainer. Rugaas got her first dog in 1948 and has been training since 1969. She set up her dog school Hagan Hundeskole in 1984 on her farm on overlooking the fjords of Norway. She started educating other dog trainers and giving seminars 1992. Since then conducted workshops in 12 different countries with students from 24 countries. She is now retired from actual dog training, but continues to conduct seminars and workshops internationally.
The body language of dogs is one form of non-verbal communication whereby dogs can express emotions and intentions through bodily movements. It refers to the interpretation of posture and behaviour of species in the genus Canis. This form of visual communication is generally used for identifying emotions and intentions of domestic dogs, though it can also be applied to wild canines such as wolves. Understanding the body language of dogs is particularly important in preventing dog bites, especially of children. This communication can occur between dogs, or during a dog-human interaction. Such movements primarily involve the tail, the ears, and the head/body. Tail-wagging is a common tail movement used by dogs to communicate. Additionally, ear flattening or heightening are typical movements made using the ears. In terms of the head/body, it is of interest to study turning of the head, as well as the overall posture of the dog.