Trivia

Junior was the son of Spike, the dog who played the title role in the Walt Disney film Old Yeller (1957),.

Junior father Spike (a.k.a. Old Yeller) was a lop-eared yellow Mastador (Labrador Retriever/Mastiff mix).

While Junior was on the set of Island of the Blue Dolphins (1964) he refused to let co-star Celia Milius out his sight.