Little Brother Rat is a 1939 Merrie Melodies cartoon directed by Chuck Jones, with story by Rich Hogan, and starring Sniffles.
On a scavenger hunt, Sniffles has to avoid an owl and a cat to get the owl's egg.
Blue Ribbon Re-Issue Titles
Original production cel signed by Leon Schlesinger.
The clips below are the original titles.
It is available on Looney Tunes Mouse Chronicles with the original titles restored.
Little Brother Rat Clip 1
Little Brother Rat Clip 2
Little Brother Rat Clip 3