This 5-cent Humane Treatment of Animals commemorative stamp was first placed on sale on April 9, 1966, at New York, New York, where 100 years prior, the American Society for the Prevention of Cruelty to Animals was founded by Henry Bergh.
A mongrel dog appears on the stamp, urging humane treatment in the name of millions of dogs and other domestic and wild animals in the United States. Babe - whose mother was a Labrador retriever - belonged to artist Norman Todhunter, who designed this stamp.
This stamp was lithographed, engraved and printed on the Giori press. It was issued in panes of fifty stamps each and authorized for an initial printing of 115 million stamps.
Postal Bulletin (March 3, 1966).