ὑποζύγια

From LSJ

αἰὲν ἀριστεύειν καὶ ὑπείροχον ἔμμεναι ἄλλων → always strive for excellence and prevail over others (Iliad 6.208, 11.784)

Source

Lexicon Thucydideum

iumenta, beasts of burden, 2.3.3, 2.14.1, 7.27.5. 7.29.4.