Pet Rock is a collectible toy made in 1975 by advertising executive Gary Dahl. Pet Rocks are smooth stones from Mexico’s Rosarito Beach. They were marketed like live pets, in custom cardboard boxes, complete with straw and breathing holes. The fad lasted about six months, ending after a short increase in sales during the Christmas season of December 1975.
I stumbled up on this user manual about how to care and train your pet rock. All my problems are solved.