Continuity mistake: When Lady enters the room where Mrs. Darling is rocking the baby, the tablecloth is hanging on one side of the table. In further shots it covers the whole table.
Continuity mistake: When Mrs. Darling is knitting, she has 3 yarns in the basket. Yellow, red and blue. In the following shot the amount has changed as well as their colours.
Continuity mistake: When Lady brings the leash to Mrs. Darling while she's knitting, the cushions behind change positions between shots. Also, a blue cushion on the floor disappears between shots.
Continuity mistake: When Jock and Trusty walk to Lady's place she is lying on a brick floor with a bowl next to her. A shot later she is next to the grass and the bowl is gone.
Continuity mistake: After Tramp escapes the dog pound he drinks from a fountain. The surrounding dried leaves around have no continuity between shots.
Continuity mistake: When Tramp peeps through the gap in the fence the division of the cement blocks of the sidewalk is right below the gap. In further shots it disappears.
Continuity mistake: When Tramp enters the alley to have breakfast at Tony's there are three dust bins on the left, two side by side and one on top. A shot later the one on top has disappeared.
Continuity mistake: When Tramp sees the puppies at the pet store one of them jumps towards the window shop, with two puppies two centimeters away from him. From the opposite angle those two puppies are nowhere to be seen.
Continuity mistake: When Tramp sneaks through the gap in the fence the wood is way above his head. From the immediate opposite angle his head is touching the gap.
Continuity mistake: When Tramp goes to Tony to get breakfast the bin is 12 bricks to the left or just 6, depending on the shot.
Continuity mistake: When Tramp watches the dog pound carriage the broken part of the fence changes its shape between shots.
Continuity mistake: At Trusty's front porch, after Lady drinks from the bowl, when we see the three dogs together the crack on its edge disappears.
Continuity mistake: At Trusty's porch, Lady lowers her head and drinks from a bowl. Just a mere frame later there's a close-up of the bowl and she is away from the bowl in a totally different position.
Continuity mistake: When we meet Trusty his snout lays on the wooden floor. In the immediate next angle it lays on the rug.
Continuity mistake: When Jock and Lady walk to Trusty's place, in the wide angle he is nowhere to be seen, only to suddenly appear at the front porch in the close-up angle.
Continuity mistake: When Jock buries his bone a falling leaf lays by the tree behind. In further shots it disappears.
Other mistake: During Lady's first night home, there's a shot of the family's clock: the number seven is painted as a six.
Continuity mistake: After Jim puts a chair blocking the door to stop Lady from exiting the kitchen, she starts to cry. Check the pattern of the floor tiles: her position changes between shots.
Continuity mistake: Puppy Lady runs to the stairs, leaving the blue blanket inside the basket. When Jim puts her back in the position of the blanket is different.
Continuity mistake: Jim puts Lady in her the basket and covers her with a blanket. A shot later Lady is not covered.