Green’s Dictionary of Slang

dog’s eye n.

[rhy. sl.]

(Aus./NZ) a meat pie.

[Aus]Bulletin issues 5626-33 105/2: We gave our first lesson on dinki-di slang [...] Dog’s eye: Pie, with or without dead horse.
[Aus]G. Seal Lingo 88: a dog’s eye and dead horse. A pie and sauce, of course [...] rhyming slang for this peculiarly Australian repast.
[NZ]D. Looser Boobslang [U. Canterbury D.Phil. thesis] : dog’s eye n. a mince pie.
[Aus]Betoota-isms 245: ‘Got stung at the footy, had to cough up $7.50 for a Dog’s Eye and sauce’.