An American Tail Fievel Goes West (1991) is a shameless rehash at its core but I find the film extremely charming and vastly more enjoyable than An American Tail (1986).

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I've never found An American Tail to be particularly engaging but Fievel Goes West is a movie that I adored and watched very often as a child, as an adult I've grown to appreciate Fievel Goes West in a way that my younger self likely wouldn't have grasped (I was 4 when it released). The film is cute but gritty, has a satisfyingly swift pace, terrifically charming/fun sequences, the quality of the animation and art design are much more impressive than you might expect, it's visually striking with an exquisite color palette and James Horner's western themed score is excellent. Another aspect that I love about the film is how dark Cat R. Waul's (the villain) motivations are for befriending mice, his intent is to exploit their labor for building his town then kill and eat them once they've served their purpose (he even has them unknowingly construct the giant mousetrap that will bring their demise). If you're a fan of animation and have never seen Fievel Goes West then it's absolutely worth a watch.