dýrafræðileg
Dýrafræðileg is an Icelandic adjective that translates to "zoological" or "related to zoology" in English. It is derived from the noun "dýrafræði," which means zoology. Zoology is the branch of biology that studies animals. Therefore, "dýrafræðileg" would be used to describe something that pertains to the scientific study of animal life.
Examples of its usage might include "dýrafræðileg rannsókn" (zoological research), referring to studies conducted on animals.