Continuity mistake: When Nuka and Vitani are at the Elephant Graveyard igniting their sticks to set the Pridelands ablaze, Vitani is first drawn with dark ear stripes. There is a close-up of her rolling her eyes at Nuka and the ear stripes are still colored in, but the lines indicating where they are present. When the stick ignites and Vitani grabs it, the stripes are gone. The stripes then appear when Vitani is setting some dry grass on fire. This mistake is repeated throughout the film.
Continuity mistake: At the end, just before the final fight scene, Zira's pride is lined up with Zira in the centre on a rock, placing her above the others. Shortly after you see a close up of her with a couple of lionesses beside her - at the same height as her. They disappear in the next shot of her.
Continuity mistake: During the final battle, the number of lionesses changes dramatically. When the two clans are standing in line, there are dozens on both sides. However, when Kovu and Kiara see the battle from across the gorge, there only appear to be ten at most. Also, both Zira and Simba are gone as well as any of the existing land formations (Such as Zira's rock).
Continuity mistake: When Rafiki is in the tree and Mufasa formulates a plan, there is a gourd that falls and breaks and Rafiki then picks up to symbolise the plan. Then he says "Are you crazy? This will never work!" and makes a hand gesture, meaning that he dropped the gourd pieces. However, they are not visible in the overhead shot when he says, "I just hope you know what you are doing!"Susan Kirk