The skull holotype was missing the postorbital region, so Owen was left to describe the anterior portion.

After examining the sutures and teeth, he assumed the first specimen to be from an older, adult Aelurosaurus, seeing that they were no longer in perfect condition.

[1] The semicircular canal found on A. felinus and all other gorgonopsians suggests that their heads were ventrally tilted, a characteristic of predators.

The genus is still under debate, since it shares features with both Aelurosaurus (such as a large orbit and short snout) and Aloposaurus (such as larger preparietal and postfrontal).

[3] Aelurosaurus felinus was originally obtained in the Gough, of the Karoo Basin of South Africa, which includes the Tapinocephalus and Pristerognathus Assemblage Zones.

[4][5] These assemblage zones are a part of the Beaufort Group and span from the Middle Perimian to the Late Permian.

[6] The stratigraphic composition of the Beaufort Group include siltstone, mudstone, and sandstone beds, with evidence of rivers flowing across the land in semi-arid conditions.