Here's why:

* Prokaryotes are single-celled organisms that lack a nucleus and other membrane-bound organelles. Their genetic material (DNA) is located in a region called the nucleoid, which is not enclosed by a membrane.

* Eukaryotes, on the other hand, are organisms whose cells have a true nucleus containing their DNA, as well as other membrane-bound organelles like mitochondria and Golgi apparatus.

Therefore, any organism that exhibits the characteristics of a eukaryotic cell, such as:

* Animals: Dogs, cats, humans, insects

* Plants: Trees, flowers, grasses

* Fungi: Mushrooms, yeast, mold

* Protists: Algae, amoeba

...would be a non-example of a prokaryote.