Emotion is simply characterized by experiencing a particular physiological state associated with a wide variety of feelings, thoughts, and behaviors. Emotions are the primary indicators of a humans well being and often affect out daily activities.
An interesting aspect of the psychology of emotions is that humans have mirror neurons that enable us to recognize what other peoples facial expressions mean in the context of the emotion.
Perspectives on emotions from the evolution theory were initiated in the late 19th century with Charles Darwin's book The Expression of Emotions in Man and Animals. "Darwin's original thesis was that emotions evolved via natural selection and therefore have cross-culturally universal counterparts."
Animals undergo emotions that are quite comparable to our own. In recent years, research has become readily available which expands prior theories of animal speech, cognition and use of devices. Emotions arise in the "mammalian brain, or the limbic system, which human beings share in common with other mammals as well as many other species."




Research suggests that canines can experience negative emotions in a parallel manner to people, including the equivalent of certain chronic and acute psychological conditions. They can often feel like they really are human; taking on certain household tasks and enjoying the same types of amenities that we take pleasure in, like television and TiVo.

Cats display a range of emotions stemming from happiness, aggravation and affection. Other feline behavior is attributed to suspicion, frustration and even vengefulness. These little guys are highly intelligent. They have a certain degree of cuteness which can overpower a human by many lengths. Screaming and crying usually always gets them what they want.

Polar bears can experience emotions of embarrassment and shame. However, they are also extremely lovable with each other. Often times, they will sleep in a loving embrace with their spouse or child.

Elephants, like human, often share a strong sense of family and death. Each elephant has its own unique set of personalities which may include feelings of happiness, sadness, and disappointment.

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Squirrels are usually very clever and persistent animals. They are often referred to as pests in local neighborhoods since they are often found digging in flower pots or stealing seeds from the bird feeder. In my opinion, I think their devious attitudes toward humans are often learned from mirroring other naughty squirrels. They find it extremely funny to annoy us.

Rodent emotions provided the first early evidence of theories about human behavior or nature. They are highly intelligent and experience both pleasure and pain, much like humans do.
Images from Flickr.com, Funnyartpictures.com, Funnypostcards.com, The Fuzzy Squid