Green’s Dictionary of Slang

1. a term of affection used to women or children.

c.1607		Beaumont & Fletcher Knight of the Burning Pestle III ii: Begon, begon my juggy, my puggy, begon my love, my deere.
1656		Mennis & Smith et al. ‘A Song’ in Wit and Drollery 19: My Juggie my puggie, my hony my cony, / My love my dove my dear.
1675		T. Duffet Mock Songs 79: Fare-well my dear Puggy, my Pullet.
1706		Proceedings Old Bailey 6 Dec. 2/1: Then you and Puggy have nothing to do but come at Bed time, and so we may go to Bed and lye till Morning, when Puggy may come again and call you.
1719		in D’Urfey Pills to Purge Melancholy IV 44: Arise, arise my Juggy, my Puggy, / Arise, get up my Dear.

2. (Scot.) a monkey.

1821–6		‘Bill Truck’ Man o’ War’s Man (1843) 148: Cutting as mony cantrips [i.e. capers/tricks] as ony puggie in a’ Bartlemy fair show.
1826		C.M. Westmacott Eng. Spy II 323: The four-footed puggys of the Brazils.
1897		C.M. Campbell Deilie Jock 29: I’ve heard talk o’ some missing link, atween men and puggies.