banteng: wild ox of the Malay Archipelago
ruminant: any of various cud-chewing hoofed mammals having a stomach divided into four (occasionally three) compartments
gram's method: a staining technique used to classify bacteria; bacteria are stained with gentian violet and then treated with Gram's solution; after being decolorized with alcohol and treated with safranine and washed in water, those that retain the gentian violet are Gram-positive and those that do not retain it are Gram-negative