White chocolate, although similar in texture to that of milk and dark chocolate, does not contain any cocoa solids. Because of this, many countries do not consider white chocolate as chocolate at all.[31] Although white chocolate was first introduced by Hebert Candies in 1955, Mars, Incorporated, was the first to produce it in the United States. Because it does not contain any cocoa solids, white chocolate does not contain any theobromine, so it can be consumed by animals.