Abbott-Smith Manual Greek Lexicon
κύων, κυνός (G2965)
5 κύων, κυνός , ὁ, ἡ (in NT masc. only), [in LXX for כֶּלֶב ;] a dog : Lk 16:21 , II Pe 2:22 ; metaph., as a word of reproach, Mt 7:6 , Phl 3:2 , Re 22:15 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain