He's Your Dog, Charlie Brown is the fifth prime-time animated TV special based upon the popular comic strip "Peanuts," by Charles M. Schulz, and was the last "Peanuts" special featuring the majority of the original voice cast from the first "Peanuts" special, which 1965 animated television special based on the comic strip "Peanuts", and produced by Lee Mendelson and directed by Bill Melendez?
He's Your Dog, Charlie Brown:  This was also the last "Peanuts" special featuring the majority of the original voice cast from the first "Peanuts" special, "A Charlie Brown Christmas". A Charlie Brown Christmas: A Charlie Brown Christmas is a 1965 animated television special based on the comic strip "Peanuts", by Charles M. Schulz.
A Charlie Brown Christmas