Mammy's voice was redubbed fairly early on (before they started using the white maid voice), in the original, Mammy says "O-W-T...Out!" & later in the cartoon “O-U-W-T…Out! In the edited version, she spells it correctly ("O-U-T").
After Jerry climbs the washboard, Mammy looks for a burgler and is attacked by Tom, all these shots get removed
Mammy's voice is redubbed, or sometimes Mammy's appearance at the end was removed.
The scene on the record player has a section removed from the middle.
The part where Jerry gets a tail full of record needles and a record lands on Tom's head making him look Chinese, followed by Jerry mocking Tom is hacked out.
Tom as a “blackface flower” after an exploding teapot is often removed.
Tom hides in a package addressed to Jerry. Jerry begins to stick hat pins into the box and saws it in half.
Jerry finally takes a look at what is inside and holds up a sign: "Is there a doctor in the house?" this was sometimes edited out.
The original opening showing Mammy singing and setting the dinner table and Jerry sneaking across the table pretending to be a Red Indian is removed.
The cut cartoon begins as Tom pops out of the potted plant.
The scene in which Jerry's head gets stuck in a bottle of shoe polish is shortened to remove the blackface gag.
The bird tosses Tom out of a tree into a garden path then Tom gets pulled back up the tree and thrown down the hollow trunk into the laundry on the washing line where Tom does an Indian chief impression (there is no laundry basket).
The edited version ends the scene after he hits the path.
Missing is a scene where Jerry and Nibbles try to fool Tom by disguising themselves as "slave stereotypes" with some shoe polish.
In the cut version you see Nibbles, held up by Jerry, spitting milk into Tom's face, then you see them run away from Tom into another room where Tom gets a frying pan in the face.
Jerry is being divided in two by the "Exterminator cat" Jerry slips Toms tail in his place. Tom's tail being chopped with an axe was shortened to remove the axe fall.
(I have never seen this scene cut though)
Mammy's voice is redubbed & some of the words were changed. Originally, she says "Well slap my face if this ain't a mess!", but in the new version, she says
"Well I'll be darned this is such a mess!" Also Tom's "One for the money, two for the show..."
where he is about to throw water over the sleeping mammy is muted leaving only the drunken "HICS", but his lips still move.
Originally the two cats look in the gas oven and Jerry throws a match in to cause an explosion, both cats ended up blackface. This was shortened and the scene ends with the explosion to remove the blackface joke.
Shortly after the "floorboard on the tail" Jerry and the canary hide themselves behind a curtain that looks like a wigwam.
The pair emerge disguised as a Red Indian and papoose, this scene is removed.
A passing meat truck splashes mud on Tom, Jerry, and Spike leaving them all in blackface and is shortened in the recut to end at the splash.
Mammy's voice is redubbed and changed. Originally, she said "Take care of old old Uncle Tom," this was changed to "Take care of old Tom.
After the coal spill at the end of the cartoon, Tom originally comes out of the pile of coal in blackface.
Mammy asks black Tom, if he has seen a cat. Tom replies "No ma'am, I ain't seen no cat, nowhere, nohow!".
On the new version this was shortened and she just yells and starts throwing coal.
A candle fired by Nibbles lands on Tom's tail was cut (50s) or reanimated (60s).
Originally after the candle set Tom on fire, he appeared in blackface.
In the 50s version the candle lands on Tom's tail but nothing happens.
Also gone was the part directly following the candle scene, in which some airborne Champagne bottles hit the blackened Tom in the back of the head causing him to fly into the cabinet of dishes.
The 60s version was redrawn to have Tom retain his Indian headdress which was absent in the original version.
Original 50s version
The exploding teapot scene taken from "Yankee Doodle Mouse" fades out early to remove a “blackface flower” gag.
"Saturday Evening Puss" (14 Jan 1950)
The new version has redrawn footage of a young white teenager who goes to a party which replaces the original footage of a rather sexy looking Mammy who went out to play cards.
Jerry's rant to Tom about the noisy music that Tom and his friends are making is muted for some reason. In the original, Jerry starts yelling "I'm trying to sleep and youse guys are out here goin' BANG BANG BANG BANG!!!" in a Bronx accent.
Original 50s version
Near the end of the cartoon Jerry blew on a noisemaker containing a hidden firecracker and was left as a blackface flower.
This scene was shortened to end at the explosion.
Mammy has been replaced with a white maid on some versions (or just her voice)
"Casanova Cat" (6 Jan 1951)
Tom breaths cigar smoke in Jerry's face causing Jerry to have a blackface then heats a tray under his feet to make him dance.
The new version cuts from Jerry as a wind up mouse to the mouse throwing a note to Butch in a paper airplane.
The cut version has all the cannibal dialogue edited out.
All the natives and Jerry's native talk were muted, even though you see all the characters' lips moving. In the original Jerry talks nonsense words and the cannibals say
“Hmmmmm barbecued cat ........... Hmmmmm barbecued mouse"
At the end of the cartoon Mammy creeps up on Tom with a baseball bat and reads from the book "It says here, a sharp blow on the head is a sure cure for amnesia, and that's what you're gonna get"
These lines are supposedly removed on the original R1 spotlight collection 2, but is back in the later corrected disk.
The original ending showed that the king beheaded Tom with a guillotine, but you only ever saw the blade fall, this was removed.
The scene where the seal throws Tom against a bird bath results in a Chinese gag and has been shortened to end on the third screenshot.
(there is no trash can, it is a bird bath)