|The Slap-Hoppy Mouse|
Sylvester takes his son, Junior, on a mouse-hunting expedition in an old, broken-down, mouse-infested house near some railroad tracks. Baby kangaroo Hippety Hopper falls out of a passing train and turns up in the house. Sylvester and Junior, as usual, mistake him for a giant mouse, and Sylvester is obliged to fight the playful Hippety.
This is the first Merrie Melodies short to feature the 1956-1957 orange rings with green background at the beginning, even though it still uses the 1955-1956 green rings with red background at the end. The orange rings with green background can also be seen in the openings on numerous Blue Ribbon re-releases of shorts from 1949, but either with the 1946-1955 version of the Looney Tunes theme, or the 1945-1955 version of the Merrie Melodies theme.
On ABC, the sequence in which Sylvester repeatedly attempts to load a rifle "frontier-style" (and gets blasted) was cut.