The answer to this question depends on what you're looking for. There are many things that aren't part of an animal cell, but some are more obvious than others.

Here are a few possibilities, with explanations:

* Cell wall: This is a rigid structure found in plant cells, bacteria, and fungi, but not animal cells.

* Chloroplasts: These are organelles found in plant cells that perform photosynthesis, a process not needed by animals.

* Vacuoles: While animal cells do have vacuoles, they are much smaller and less prominent than the large central vacuoles found in plant cells.

* Flagella: Some animal cells have flagella, but not all. For example, sperm cells have flagella for movement, while most other animal cells don't.

To give you the best answer, please provide some more context about what you're looking for. For example:

* Are you looking for something specific that's unique to plant cells and not found in animal cells?

* Are you looking for something that's not present in most animal cells?

Let me know and I can give you a more precise answer!