See an image that represents tecuani in the Visual Lexicon of Aztec Hieroglyphs, ed. Stephanie Wood (Eugene, Ore.: Wired Humanities, 2020-present).
Regarding the Nahuatl word tecuani. There is no word for animal in Nahuatl. Nahua speakers use tecuani to name a certain class of living creatures: non-humans that bite. Tecuani does have its root in the verb cua, to eat. But another sense of cua is to bite, and this is the meaning of tecuani, a people biter. Obviously there are some tecuani that, aside from biting people, can also eat them, but this isn't the sense of the word.
John Sullivan, Aztlan Listserv posting, Feb. 29, 2012.
ica oicamac ticalac in tequanj [...] ca ie tequanj icamac = thou hast entered the mouth of a wild beast [...] For already thou art in the mouth of the wild beast (central Mexico, sixteenth century)
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 6 -- Rhetoric and Moral Philosophy, No. 14, Part 7, eds. and transl. Arthur J. O. Anderson and Charles E. Dibble (Santa Fe and Salt Lake City: School of American Research and the University of Utah, 1961), 72.
Dances observed by ethnographers in Nahua regions (from Toluca, State of Mexico, to El Salvador) were catalogued by Fernando Horcasitas, including the Danza de los Tigres, which can have the name "Danza de Tecuanes." (twentieth century, Guerrero)
Fernando Horcasitas, "La Danza de los Tecuanes," Estudios de Cultura Náhuatl 14 (1980), 239–286.
tēcuāni = wild animal (colonial Mexico)
Michel Launey, An Introduction to Classical Nahuatl, translated and adapted by Christopher MacKay (Cambridge: Cambridge University Press, 2011), 9.
tequani (noun) = a wild beast, a savage person
Daniel Garrison Brinton, Ancient Nahuatl Poetry: Containing the Nahuatl Text of XXVII Ancient Mexican Poems (1877), 163.