These early gene and CNV findings have shown that the cognitive and behavioral features associated with each of the underlying mutations is variable. Each mutation is itself associated with a variety of clinical diagnoses, and can also be found in a small percentage of individuals with no clinical diagnosis.   Thus the genetic disorders that comprise autism are not autism-specific. The mutations themselves are characterized by considerable variability in clinical outcome and typically only a subset of mutation carriers meet criteria for autism. This variable expressivity results in different individuals with the same mutation varying considerably in the severity of their observed particular trait. 
The Tamil movie Kumki , which revolves around a mahout and his trained elephant, shows his elephant in musth period towards the climax. Captive elephants are either trained for duties in temples (and in cultural festivals), or trained as a Kumki elephant which confronts wild elephants and prevents them from entering into tribal villages. Elephants trained for temple duties are of a gentle nature and cannot face wild elephants. In this movie, a tribal village wants to hire a Kumki elephant to chase away wild elephants which enter the village every harvest season. The mahout, who is in want of money, takes his temple-trained elephant to do this job, in the vain hope that wild elephants won't come in. But wild elephants start attacking the village on the harvest day. The temple-trained elephant gets into musth and thus fights with the wild elephants, kills the most notorious among the herd, and gets killed because of injuries sustained during the fight.