Extended Strong's Greek Lexicon (Abbott-Smith based)
living thing
Usage: ζῷον (Rec. ζῶον, see LS, see word), -ου, τό (ζωός, alive), [in LXX for חַי (chiefly) and cognate forms; frequently in Wis ;] a living creature, an animal: Rev.4:6-9 5:6 ff. Rev.6:1 ff. Rev.7:11 14:3 15:7 19:4; ζῴων τ. αἷμα, Heb.13:11; ἄλογα ζ., 2Pe.2:12, Ju 10.† SYN.: θηρίον, in which the brutal, bestial element is emphasized, and which is never used of sacrificial animals. On the other hand, ζ. is the more comprehensive, as expressing the vital element common to the whole anima] creation (see Tr., Syn., LXXxi;
Cremer, 274). (AS)