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Dog Whistle
A dog whistle (also known as silent whistle or Galton's whistle) is a type of whistle that emits sound in the ultrasonic range, which humans cannot hear but some other animals can, including dogs and domestic cats, and is used in their training. It was invented in 1876 by Francis Galton and is mentioned in his book ''Inquiries into Human Faculty and Its Development'', in which he describes experiments to test the range of frequencies that could be heard by various animals, such as a house cat. Dog whistles were invented to explore auditory perception in animals and have since evolved into tools primarily used for dog training.The dog whistle has since evolved into a widely-used tool in dog training, with commercial developments leading to more specialized and efficient designs. References to dog whistles also appear in children's media, including cartoons and educational programming, where they are used as examples in discussions about sound, hearing, or animal behavior. Origi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal Training
Animal training is the act of teaching animals specific responses to specific conditions or stimuli. Training may be for purposes such as companionship, detection, protection, and entertainment. The type of training an animal receives will vary depending on the training method used, and the purpose for training the animal. For example, a seeing eye dog will be trained to achieve a different goal than a wild animal in a circus. In some countries animal trainer certification bodies exist. They do not share consistent goals or requirements; they do not prevent someone from practicing as an animal trainer nor using the title. Similarly, the United States does not require animal trainers to have any specific certification. An animal trainer should consider the natural behaviors of the animal and aim to modify behaviors through a basic system of reward and punishment. Methods The behavioral approach Principles During training, an animal trainer can administer one of four pot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dog Training
Dog training is a type of animal training, the Applied behavior analysis, application of behavior analysis which uses the environmental events of antecedents (trigger for a behavior) 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. A dog learns from interactions it has with its environment. This can be through classical conditioning, where it forms an association between two stimuli; Learning#Non-associative learning, non-associative learning, where its behavior is modified through habituation or sensitisation; and operant conditioning, where it forms an association between an antecedent and its consequence. Most working dogs are now trained using reward-based methods, s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dog Equipment
The dog (''Canis familiaris'' or ''Canis lupus familiaris'') is a domesticated descendant of the gray wolf. Also called the domestic dog, it was selectively bred from a population of wolves during the Late Pleistocene by hunter-gatherers. The dog was the first species to be domesticated by humans, over 14,000 years ago and before the development of agriculture. Due to their long association with humans, dogs have gained the ability to thrive on a starch-rich diet that would be inadequate for other canids. Dogs have been bred for desired behaviors, sensory capabilities, and physical attributes. Dog breeds vary widely in shape, size, and color. They have the same number of bones (with the exception of the tail), powerful jaws that house around 42 teeth, and well-developed senses of smell, hearing, and sight. Compared to humans, dogs possess a superior sense of smell and hearing, but inferior visual acuity. Dogs perform many roles for humans, such as hunting, herding, pullin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clicker Training
Clicker training is a positive reinforcement animal training method based on a bridging stimulus ( the clicker) in operant conditioning. The system uses conditioned reinforcers, which a trainer can deliver more quickly and more precisely than primary reinforcers such as food. The term "clicker" comes from a small metal cricket noisemaker adapted from a child's toy that the trainer uses to precisely mark the desired behavior. When training a new behavior, the clicker helps the animal to quickly identify the precise behavior that results in the treat. The technique is popular with dog trainers, but can be used for all kinds of domestic and wild animals. Sometimes, instead of a click to mark the desired behavior, other distinctive sounds are made (such as a "whistle, a click of the tongue, a snap of the fingers, or even a word") [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dog Communication
Dog communication refers to the methods dogs use to transfer information to other dogs, animals, and humans. Dogs may exchange information vocally, visually, or through smell. Visual communication includes mouth shape and head position, licking and Sniffing (behavior), sniffing, ear and tail positioning, eye gaze, eye contact, facial expression, and Body language, body posture. Auditory communication can include bark (sound), barks, growling, growls, howling, howls, whines and whimpers, screams, pants and sighs. Dogs also communicate via gustatory communication, utilizing scent and pheromones. Humans can communicate with dogs through a wide variety of methods. Broadly, this includes vocalization, hand signals, body posture and touch. The two species also communicate visually. Through domestication, dogs have become particularly adept at "reading" human facial expressions. Dogs recognise and infer emotional information from humans. When communicating with a human, their level of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hearing Range
Hearing range describes the frequency range that can be heard by humans or other animals, though it can also refer to the range of levels. The human range is commonly given as 20 to 20,000 Hz, although there is considerable variation between individuals, especially at high frequencies, and a gradual loss of sensitivity to higher frequencies with age is considered normal. Sensitivity also varies with frequency, as shown by equal-loudness contours. Routine investigation for hearing loss usually involves an audiogram which shows threshold levels relative to a normal. Several animal species can hear frequencies well beyond the human hearing range. Some dolphins and bats, for example, can hear frequencies over 100 kHz. Elephants can hear sounds at 16 Hz–12 kHz, while some whales can hear infrasonic sounds as low as 7 Hz. Physiology The 'hairs' in hair cells in the inner ear, stereocilia, range in height from 1 μm, for auditory detection of very high freq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dog Behavior
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. Co-evolution with humans The origin of the domestic dog (''Canis familiaris'') is not clear. Whole-genome sequencing indicates that the dog, the gray wolf and the extinct Taymyr wolf diverged around the same time 27,000–40,000 years ago. How dogs became domesticated is not clear, however the two main hypotheses are self-domestication or human domestication. There exists evidence of human-canine behavioral coevolution. Intelligence Dog intelligence is the ability of the dog to perceive information and retain it as knowledge in order to solve problems. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bark (sound)
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 owls. "Bark" is also a verb that describes the sound of many canids. Definition There is no precise, consistent, and functional acoustic definition for barking, but researchers classify barks according to several criteria. Researchers at the University of Massachusetts Amherst and Hampshire College have defined a bark as a short, abrupt vocalization that is relatively loud and high-pitched, changes in frequency, and often repeats rapidly in succession.Lord, Kathryn., Feinstein, Mark., Coppinger, RaymondBarking and mobbing. ''Behavioural Processes''. 2009. Barking in dogs Dog barking is distinct from wolf barking. Wolf barks represent only 2.4% of all wolf vocalizations, in warning, defense, and protest. In contrast, dogs bark in many social situations, with acoustic communication in dogs being described as hypertr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whistle
A whistle is a musical instrument which produces sound from a stream of gas, most commonly air. It is a type of Fipple, fipple flute, and may be mouth-operated, or powered by air pressure, steam, or other means. Whistles vary in size from a small slide whistle or nose flute type to a large multi-piped Organ (music), church organ. Whistles have been around since early humans first carved out a gourd or branch and found they could make sound with it. In prehistoric Egypt, small shells were used as whistles. Many present day Wind instrument, wind instruments are inheritors of these early whistles. With the rise of more mechanical power, other forms of whistles have been developed. One characteristic of a whistle is that it creates a pure, or nearly pure, Musical tone, tone. The conversion of flow energy to sound comes from an interaction between a solid material and a fluid stream. The forces in some whistles are sufficient to set the solid material in motion. Classic examples a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piezoelectricity
Piezoelectricity (, ) is the electric charge that accumulates in certain solid materials—such as crystals, certain ceramics, and biological matter such as bone, DNA, and various proteins—in response to applied mechanical stress. The piezoelectric effect results from the linear electromechanical interaction between the mechanical and electrical states in crystalline materials with no inversion symmetry. The piezoelectric effect is a reversible process: materials exhibiting the piezoelectric effect also exhibit the reverse piezoelectric effect, the internal generation of a mechanical strain resulting from an applied electric field. For example, lead zirconate titanate crystals will generate measurable piezoelectricity when their static structure is deformed by about 0.1% of the original dimension. Conversely, those same crystals will change about 0.1% of their static dimension when an external electric field is applied. The inverse piezoelectric effect is used in the pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
