ὕσσακος
From LSJ
ὑπὸ δὲ τῆς φιλαυτίας παρηγμένοι ἄλογα φασὶν τὰ ζῷα ἐφεξῆς τὰ ἄλλα σύμπαντα → it is self-love which leads them to say that all the other animals without exception are non-rational
English (LSJ)
ὑστακός, Hsch.; ὑσσάκους· πασσάλους, EM785.7, Phot. (cf. ὕσταξ); dub. in
A Lyr.A desp.46A; but, = pudenda muliebria, Ar. Lys. 1001: Dor. word acc. to Phot.