Kalmar "Genus Tragulus" tana nufin rabe-raben haraji na dabbobi masu shayarwa. Halin halittar Tragulus na dangin Tragulidae ne, wanda ya haɗa da ƙananan dabbobi masu kama da barewa da aka sani da chevrotains ko barewa. Chevrotains na asali ne a Afirka da Asiya, kuma ana siffanta su da ƙananan girmansu, ƙananan ƙafafu, da gajerun tururuwa marasa rassa (a cikin maza). Akwai nau'ikan hudu a cikin ilimin halittar, ciki har da karancin linzamin linzamin kwamfuta (tragulus nagilan linzamin kwamfuta (tragulus Nigerrics), tragulus jabanicus).