Tethytragus was a grazer or a mixedfeeder in its feedinghabits. Dental microwear and mesowear analyses of T. langaigive conflicting evidence as to its dietary habits; the latter suggests an exclusively grazing diet while the former suggests mixed feeding habits; the totality of the evidence suggests the species was a mixed feeder on the grazing end of the spectrum between browsers and grazers. Paired 87Sr/86Sr, δ18OCO3, and δ13C measurements from the tooth enamel of Tethytragus sp. from the Middle Miocene site of Gratkörn in Austria show it to have been a canopy browser that exclusively ingested C3 plants.