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  2. Dog whistle - Wikipedia

    en.wikipedia.org/wiki/Dog_whistle

    To human ears, dog whistles only emit a quiet hissing sound. [6] The principal advantage of dog whistles is that they do not produce a loud, potentially irritating noise for humans that a normal whistle would produce and thus can be used to train or command animals without disturbing nearby people.

  3. Dogs were played the sound of humans crying. Their reaction ...

    www.aol.com/dogs-were-played-sound-humans...

    Dogs have developed a special kind of emotional bond with humans over millennia. They connect with us in ways that other domestic animals haven't, per a new study. That's why dogs bring us so much ...

  4. Health effects from noise - Wikipedia

    en.wikipedia.org/wiki/Health_effects_from_noise

    An example of this would be in dogs, and the noise exposure levels occurring within kennels. Dogs experience this noise exposure whether it be a long stay at an animal shelter, or a weekend stay at a boarding facility. Organizations like NIOSH and OSHA have different regulations when it comes to the noise exposure levels in industrial workers ...

  5. Bark (sound) - Wikipedia

    en.wikipedia.org/wiki/Bark_(sound)

    Dogs' close relationship with humans also renders dogs reliant on humans, even for basic needs. Barking can be used as a way to attract attention, and any positive response exhibited by the owners reinforces the behaviour. For example, if a dog barks to get food and the owner feeds it, they are conditioned to continue said behaviour. [10]

  6. Study Finds Dogs Have an Emotional Response When Humans Cry - AOL

    www.aol.com/study-finds-dogs-emotional-response...

    The findings showed that dogs react emotionally when they hear the crying sounds in humans. The study abstract notes that dogs' responses showed "higher levels of behaviors associated with ...

  7. Noise pollution - Wikipedia

    en.wikipedia.org/wiki/Noise_pollution

    Noise pollution, or sound pollution, is the propagation of noise or sound with potential harmful effects on humans and animals. The source of outdoor noise worldwide is mainly caused by machines, transport and propagation systems.

  8. List of animal sounds - Wikipedia

    en.wikipedia.org/wiki/List_of_animal_sounds

    Certain words in the English language represent animal sounds: the noises and vocalizations of particular animals, especially noises used by animals for communication. The words can be used as verbs or interjections in addition to nouns , and many of them are also specifically onomatopoeic .

  9. Ultrasound - Wikipedia

    en.wikipedia.org/wiki/Ultrasound

    [23] [24] The wild ancestors of cats and dogs evolved this higher hearing range to hear high-frequency sounds made by their preferred prey, small rodents. [23] A dog whistle is a whistle that emits ultrasound, used for training and calling dogs. The frequency of most dog whistles is within the range of 23 to 54 kHz. [25]