συμπαρομαρτέω
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)
A = συμπαρέπομαι, X.Cyr.1.6.24, App.Ill.27; of things, accompany, σ. πάσῃ ἡλικίᾳ τὸ κάλλος X.Smp.4.17; φόβος σ. τινί Id.Cyr.8.7.7; ὀσμαί Id.Oec.4.21, Ael.VH3.1; of symptoms, Aret.SD2.1, Steph.in Gal.1.237D.
German (Pape)
[Seite 985] = συμπαρέπομαι; Xen. Cyr. 7, 5, 84; ἐπί τι, 1, 6, 24 u. Sp., wie Luc. Gall. 9.