The progression of the amygdala over time from its initial formation until its mature state. The amygdala is an almond-shaped set of neurons in the medial temporal lobe of the brain that play a key role in processing emotions such as fear and pleasure. [ GOC:dgh GOC:dph http://purl.obolibrary.org/obo/go/references/0000021 http://openisbn.com/search.php?q=0878937420&isbn=1/ GOC:jid GOC:cls ]