Drd2Pet1-CKO mice are largely behaviorally normal. Drd2Pet1-CKO (blue symbols) mice show behaviors indistinguishable from controls (black symbols) in measures of locomotion: (A, B) open field test and (C) rotarod; measures of anxiety-like and depression-like behavior: (D) elevated plus maze, (E) tail suspension test, and (F) forced swim test; or learning and memory: (G) contextual fear conditioning and (H) water T maze; n = 15 control mice (8 males, 7 females) and 11 Drd2Pet1-CKO (6 males, 5 females), except for C where, n = 21 control mice (14 males, 7 females) and 18 Drd2Pet1-CKO (13 males, 5 females). Each symbol represents one animal, error bars represent SEM. No significant differences (p > 0.05) between Drd2Pet1-CKO and controls were observed. No sex-specific (male vs female) phenotypes observed. For assay details, see Materials and Methods; for statistical details, see Table 2.