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  2. Grimace scale - Wikipedia

    en.wikipedia.org/wiki/Grimace_scale

    A drawing by Konrad Lorenz showing facial expressions of a dog. The grimace scale (GS), sometimes called the grimace score, is a method of assessing the occurrence or severity of pain experienced by non-human animals according to objective and blinded scoring of facial expressions, as is done routinely for the measurement of pain in non-verbal humans.

  3. Flehmen response - Wikipedia

    en.wikipedia.org/wiki/Flehmen_response

    The flehmen response (/ ˈ f l eɪ m ən /; from German flehmen, to bare the upper teeth, and Upper Saxon German flemmen, to look spiteful), also called the flehmen position, flehmen reaction, flehmen grimace, flehming, or flehmening, is a behavior in which an animal curls back its upper lip exposing its front teeth, inhales with the nostrils usually closed, and then often holds this position ...

  4. Facial expression - Wikipedia

    en.wikipedia.org/wiki/Facial_expression

    The universality hypothesis is the assumption that certain facial expressions and face-related acts or events are signals of specific emotions (happiness with laughter and smiling, sadness with tears, anger with a clenched jaw, fear with a grimace, or gurn, surprise with raised eyebrows and wide eyes along with a slight retraction of the ears ...

  5. Smile - Wikipedia

    en.wikipedia.org/wiki/Smile

    It is distinct from a similar but usually involuntary expression of anxiety known as a grimace. Although cross-cultural studies have shown that smiling is a means of communication throughout the world, [ 1 ] there are large differences among different cultures, religions, and societies, with some using smiles to convey confusion, embarrassment ...

  6. How to smile without looking like a creep, according to ...

    www.aol.com/lifestyle/2017-06-30-how-to-smile...

    The new study, published today in PLOS One, could help doctors who perform facial reanimation surgery and rehabilitation—understanding the characteristics of a great smile will help to make sure ...

  7. List of facial expression databases - Wikipedia

    en.wikipedia.org/wiki/List_of_facial_expression...

    A facial expression database is a collection of images or video clips with facial expressions of a range of emotions. Well-annotated ( emotion -tagged) media content of facial behavior is essential for training, testing, and validation of algorithms for the development of expression recognition systems .

  8. Is the Grimace Shake coming back? McDonald's in Canada ... - AOL

    www.aol.com/grimace-shake-coming-back-mcdonalds...

    Think my Canadian besties could use a little sumthin' sweet :)”, Grimace wrote in a hand-written note to the McDonald’s Canada communications team. Grimace When is the Grimace shake coming back?

  9. What happened to McDonald's Grimace Shake? Viral ... - AOL

    www.aol.com/happened-mcdonalds-grimace-shake...

    Grimace's "birthday", which is celebrated on June 12, has come and gone, but his milkshake still remains unseen. Last year, McDonald's introduced the Grimace Shake for the character's birthday.