In the riverine area surrounding Benin City, there are two types of crocodile. The Ẹghughu, known in English as the dwarf or bush crocodile, is believed to be more docile ( ; Ọbazee 2025, p. 133). The second type is the Àgbákà, the aggressive Nile crocodile ( ; Ọbazee 2025, p. 11).

Crocodiles are one of the important animals represented in the historical Emwin Arhe, and they are known as Olokun’s guards or the “policemen” of the waters. The powerful and ferocious qualities of these animals might explain why warrior figures are often depicted wearing Uhunmwu-Ẹkuẹ (pendant masks) in the shape of crocodile heads on Ama-Ẹrọnmwọn (bronze relief plaques) ( ). Olokun devotees use crocodiles as sacrificial animals in offerings during the worship of Olokun.

Depictions of Ewi (mudfish) are among the most frequent motifs in the Emwin Arhe (royal treasures). Mudfish hold an important place in Edo belief, both as representations of the god Olokun and as symbols of royalty (Plankensteiner 2007, p. 410), as well as of “prosperity, peace, well-being and fertility” (Ben-Amos 1976, p. 245). Mudfish are also particularly common animals for sacrifice, and mudfish-shaped Orhiẹvbẹ (kola-nut boxes) were used to make offerings or store kola nuts.

Yet, the appearance of Ewi across the Emwin Arhe is not consistent, and it has been argued that different species of mudfish were depicted by Edo artists, each with different qualities and capabilities. For example, the electric shock of Malapterurus electricus resembles the fierceness of the Ọba, while the liminal qualities of the Synodontis clarias mudfish, which lives both on land and in water, similarly reflect the Ọba’s rule over land and sea (Gallagher 1983, p. 93). With these different qualities in mind, the mudfish is an important symbol of Benin kingship and royalty.

Sometimes the Ọba was depicted by artists with mudfish rather than legs (see Ọba with Mudfish Legs).

Iwu are facial and body markings (scarifications) that were historically worn by Edo men and women. However, since the 1960s, the practice has been nearly extinct (Aisien 2011). In the past, Iwu were used as a way of proving that one was an Edo citizen, and the ceremony of having Iwu completed was an important rite of passage for men and women. The Osiwu, who also practised circumcision and other surgical procedures, would carry out the procedure of adding Iwu. There are different types of Iwu: ‘blades’ worn on the torso (Iwu-eko), and those worn on the face, such as Ikharo (three or four markings above the eyebrows), Irho (two narrow ‘blades’ worn on each cheek), Ovbihue (nasal ‘blades’), Ovbi-agbanmwen (chin ‘blade’), and Igho-okpa/Ukpgho (three forehead ‘blades’) (Aisien 2011, p. 22).

The number of Iwu also varied depending on the identity of the person wearing them. For example, royal men would wear six ‘blades’ on their torso, whilst men who were not royal would wear seven ‘blades’. Meanwhile, the Ọba’s female children would wear fifteen ‘blades’, and all other women would wear sixteen (Aisien 2011).

These motifs are sometimes interpreted as Uzo (antelopes) but also as Emila (cows). Both animals share certain characteristics, being regarded as physically beautiful and peaceful creatures. Some Orhiẹvbẹ (kola-nut bowls) take the form of an antelope head with its horns grasped by a pair of hands, a gesture that symbolises the right of humans to sacrifice antelopes and cows with impunity (Ben-Amos Girschick 2007, cat. no. 88, pp. 339, 341).

Uzo primarily symbolise beauty, docility, and their status as permissible sacrificial animals, reinforcing themes of human control over nature and the rituals that underpin social and spiritual order.