The sentence contains a grammatical error. It should say, "I want to understand why the other animals ran away."
**Meaning:** The speaker wants to comprehend the reason behind the other animals' decision to flee.
**Rephrased options:**
1. "I would like to know why the other animals ran away."
2. "I want to figure out why the other animals darted off."
3. "I'm curious about why the other animals escaped."