Heavens To Mergatroy!

Here's a box of Kellogg's Cocoa Krispies, from around 1963, with Snagglepuss, who was a regular on the syndicated Yogi Bear Show, which Hanna-Barbera produced.

Heavens To Murgatroid!

Here's Snagglepuss (voiced by Daws Butler) starring in one of an early 1960s series of commercials for Kellogg's Cocoa Krispies cereal