There are also: serpentine, colubrine (if it's a cobra-like snake, can't apply to a constricter, say, or a sidewinder ...), anguine.    From Wordnik.com.  [Breakfast in Bed] Reference

J anguine ae patriae oppugna - XX, 4. uictoriae licentiam.    From Wordnik.com.  [Panegyrici veteres qvos ex codice ms. librisqve collatis recensvit ae notis integris iisqve partim ad hve ineditis Christiani Gottlibii Schwarzii et excerptis aliorvm additis etiam svis instrvxit et illvstravit Wolfgangvs Iaegervs ..] Reference

Non his juvenilis orta parentlbus Infccit a qiwr, f anguine GallicOr.    From Wordnik.com.  [The orange-girl at Foote's to Sally Harris: [o]r The town to the country Pomona. : An heroic epistle] Reference

Ine adjectives that pertain to, resemble or are characteristic of an animal: accipitrine ` hawklike 'leonine ` lionlike' anguine ` snakelike 'lupine ` wolflike' anserine ` gooselike 'lutrine ` otterlike' aquiline ` eaglelike 'murine ` mouselike' asinine ` asslike 'oscine ` songbirdlike' bovine ` cowlike 'ovine ` sheeplike' canine ` doglike 'passerine ` perching - caprine ` goatlike' songbirdlike 'cervine ` deerlike' pavonine ` peacocklike 'colubrine ` kingsnakelike' piscine ` fishlike 'or ` gartersnakelike' porcine ` piglike or elephantine ` elephantlike '` swinelike' equine ` horselike 'ranine ` froglike' feline ` catlike 'serpentine ` serpentlike' herpestine ` mongooselike 'suilline ` hoglike' hircine ` goatlike, 'especially suine ` swinelike' in strong odor taurine ` bull-like 'or lustfulness ursine ` bearlike' lacertine or lacertilian viperine ` viperlike '.    From Wordnik.com.  [VERBATIM: The Language Quarterly Vol III No 3] Reference

•ornm smantium adhibct, ea - n6cit, m (anguine hydrae fua tfercuies.    From Wordnik.com.  [Q. Horatii Flacci eclogae: cum scholiis veteribus] Reference

■ anguine hopes of complete succcess.    From Wordnik.com.  [The debates and proceedings in the Congress of the United States : with an appendix containing important state papers and public documents, and all the laws of a public nature; with a copious index; compiled from authentic materials] Reference

Quxfita multo (anguine Gloria».    From Wordnik.com.  [Matthiae Casimiri Sarbievii e Societate Jesu, Carmina] Reference

In numenmique exukant (anguine pleti.    From Wordnik.com.  [T. Lucretii Cari De rerum natura libri sex] Reference

'I know, how (anguine in thy country's cauie.    From Wordnik.com.  [Elegant Extracts; Or, Useful and Entertaining Pieces of Poetry: Selected for the Improvement of ...] Reference

Hacigicur ille rcgnum iliipcac (anguine cditus.    From Wordnik.com.  [M. Antoni Mureti ... Orationes, epistolæ hymniqve saeri] Reference