That's a great question! There are a few things found in animal cells that aren't typically found in human cells, but it's important to note that humans are animals, so the differences are subtle.

Here are some examples:

* Centrioles: These are small, cylindrical structures that help organize microtubules during cell division. While most human cells have centrioles, some specialized cells like muscle cells and nerve cells do not.

* Lysosomes: These are membrane-bound organelles containing enzymes that break down cellular waste products. While human cells have lysosomes, some animal cells have specialized lysosomes with unique enzymes depending on their function.

* Specific proteins and enzymes: There are many unique proteins and enzymes found in different animal species, and these might not be found in human cells. For example, some animals have enzymes that help them digest cellulose (found in plants), while humans do not.

* Specialized cells: Some animals have specialized cells that are not found in humans, such as the stinging cells of jellyfish or the photoreceptor cells of the squid eye.

It's important to remember that:

* The vast majority of cellular components are shared between human and animal cells.

* Even within human cells, there can be variations in the presence and abundance of certain components, depending on the type of cell.

Do you have a particular animal in mind? Maybe knowing that would help us focus the answer more!