If you loved The Land Before Time, try The Secret of NIMH
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Don Bluth, and they both carry the tender mood tag, and they sit in Adventure / Animation / Family territory. If that's the register that drew you to The Land Before Time, the second film will land in a comparable space — through a different lens.
tender
What The Secret of NIMH is
A farm at dawn, a plow in the distance, a tiny door ajar. A widowed mouse and her family flee, aided by a crow and escaped lab rats. Don Bluth's early work shows a darker edge.
Ask 
ChatGPT
Claude
Grok
Le Chat
Perplexity
for a deeper bridge
ChatGPTClaudeGrokLe ChatPerplexity