Exotic baryons and the large-$N_c$ expansion

The status of exotic baryons is analyzed in the limit of a large number of colors $N_c.$ Several toy models reproducing the main features of the large-$N_c$ QCD are studied in order to clarify the recent controversy concerning the consistency of various approaches to the ${1/N}_c$ expansion for exotic baryons. The analysis reveals a number of contradictions between the systematic ${1/N}_c$ expansion and the rigid-rotator approximation, including the problems of this approximation in the description of exotic baryons.