Green’s Dictionary of Slang

cuzzie n.

[‘Note: derived from ‘cousin’, this is a term used specifically by members of the Mongrel Mob gang’ Looser (2001)]

(N.Z. prison) a narcotics detection dog.

[NZ]D. Looser Boobslang [U. Canterbury D.Phil. thesis] 51/1: cuzzie n. the narcotics detection dog.