Looney Tunes - Hop, Look and Listen (1948)

Hop, Look and Listen is a 1948 Warner Bros. Looney Tunes cartoon directed by Robert McKimson. The short was released on April 17, 1948, and stars Sylvester and Hippety Hopper, in the latter's first appearance.
Notes:
The cartoon was re-released into the Blue Ribbon Merrie Melodies program on June 4, 1955. Like most re-released cartoons at the time, the original closing bullet titles were kept. In 1995, Turner Entertainment restored the original titles of the short for its American and European Turner "dubbed" versions.
This was the only Hippety Hopper cartoon whose copyrights were sold to Associated Artists Productions in 1956. They closed in 1958 and their assets were bought by United Artists. United Artists renewed the copyright in 1975. In 1981, Metro-Goldwyn-Mayer bought United Artists and its assets. In 1986, Turner Broadcasting System bought MGM/UA, kept most of their assets, then sold the company. Finally, in 1996, Time Warner (now WarnerMedia) bought out Turner Broadcasting, putting the short back in Warner Bros.' ownership.
The song playing on the opening titles is "You Never Know Where You're Goin' Till You Get There", which had been sung by Sylvester a few weeks earlier in Back Alley Oproar. The same opening title music would be used for Hippety Hopper the following year.
Also, Hippety Hopper is called "Junior" for this short only.
The bulldog in this cartoon would later reappear in Hippety Hopper the following year.