But in case a gallstone obstructs the bile duct, certain problems may occur. The common symptoms of gallstones include: Sudden onset of pain that may just as suddenly increase in severity. The pain is mainly felt in the right side of the abdomen.
Affiliative behavior can be defined as any prosocial behavior that brings two or more individuals into close proximity. The formation of social units, such as mating pairs, family units, colonies, or even societies is critical for the survival of most species, including humans.
Behavior (American English) or behaviour (Commonwealth English) is the range of actions and mannerisms made by individuals, organisms, systems, or artificial entities in conjunction with themselves or their environment, which includes the other systems or organisms around as well as the (inanimate) physical environment.