AllMovie

Given money by his parents to purchase a pet, Beaver (Jerry Mathers) is advised by Larry (Rusty Stevens) to pocket the dough when the boys see a note in the supermarket offering a monkey named Stanley free to anyone willing to take it. Sure enough, Stanley is installed in the Cleaver household, much to the dismay of dad Ward and mom June. But since the name of this series isn't "Leave It to Stanley," one can assume that Beav's simian pal will not be a permanent resident.