Κλειώ
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)
οῦς, ἡ, Clio, one of the Muses, Hes.Th.77, Pi.N.3.83 (Κλεοῦς metri gr. codd. recc.), etc. (κλέω (A), κλείω (B).)