Four science-based ways to tell if your cat loves you

Even the most devoted cat owners wonder at some point, perhaps waking up in a cold sweat in the middle of the night, whether their cat really loves them. Dog people like to smugly point out dogs' long history as humankind's ...

Honeybees are less likely to sting in larger groups

To sting or not to sting? An alarm pheromone plays a decisive role in bees' willingness to sting—and their group size, as scientists from the University of Konstanz have now shown

Whale clans use vocalizations to mark their culture

For decades, researchers and the public have been captivated by the deep-diving sperm whales, highly social animals who live in groups of mothers and calves. The whales communicate with Morse code-like series of clicks called ...

Social group

A group can be defined as two or more humans that interact with one another, accept expectations and obligations as members of the group, and share a common identity. By this definition, society can be viewed as a large group, though most social groups are considerably smaller.

A true group exhibits some degree of social cohesion and is more than a simple collection or aggregate of individuals, such as people waiting at a bus stop. Characteristics shared by members of a group may include interests, values, ethnic or social background, and kinship ties. According to Paul Hare, the defining characteristic of a group is social interaction.

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