There are adaptive stereotypic behaviors such as grooming in cats and preening in birds. Common stereotypic behaviours in dogs include circling, light fixation and fly snapping. EEG measures taken during anesthesia exhibit stereotypic changes as anesthetic depth increases. Often, stilted speech found in children with ASD will also be especially stereotypic or rehearsed. A direct connection between stereotypic images and negative attitudes to science is difficult to establish. The mass-produced tiles acquired a more stereotypic design with predominant polychrome irregular shell motifs. Most fossil strepsirrhines lacked the stereotypic lemuriform toothcomb. However, expressions of stereotypic behaviour can also present a unique opportunity for researchers. The classic form of TD refers to stereotypic movements of the mouth, which resemble chewing. This call is relatively stereotypic among all right whale individuals and populations. Stereotypic behaviors are abnormal or compulsive behaviors. Stereotypic movement disorder due to head trauma may be permanent. Stereotypic movement disorder is often misdiagnosed as tics or Tourette syndrome (TS).