| Singular | Plural | |
|---|---|---|
| Nominativ | ethologus, ethologus | ethologi, ethologi |
| Genitiv | ethologi, ethologi | ethologorum, ethologum, ethologum, ethologorum |
| Dativ | ethologo, ethologo | ethologis, ethologis |
| Akkusativ | ethologom, ethologom, ethologum, ethologum | ethologos, ethologos |
| Ablativ | ethologo, ethologo | ethologis, ethologis |
| Vokativ | ethologe, ethologe | ethologi, ethologi |