Feline

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late 17th century: from Latin felinus, from feles ‘cat’.

wiktionary

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From Latin fēlīnus, from fēlēs(“wildcat, marten”).

Substantive use of the adjective feline, from Latin fēlīnus

etymonline

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feline (adj.)

"cat-like," 1680s, from Late Latin felinus "of or belonging to a cat," from Latin feles (genitive felis) "cat, wild cat, marten," which is of uncertain origin. Hence Modern Latin Felis, the cat genus. As a noun, "a feline animal" (popularly "a domestic cat") from 1861.