What is the unstressed vowel in animal?

The unstressed vowel in "animal" is the "i" in the second syllable.

Here's why:

* Stress: The stress in the word "animal" falls on the first syllable, "an-".

* Unstressed Vowels: Unstressed vowels often have a shorter, less distinct sound. In "animal", the "i" in the second syllable is very short and almost disappears.