Green’s Dictionary of Slang

bufe n.

also boufer, bufer, buff, buffa, buffer
[echoic of a bark; Ribton-Turner, A History of Vagrants (1887), suggests Welsh bwch, a buck, a male animal]

[mid-16C–early 19C] (UK Und.) a dog.

In compounds

bufe nabber (n.) (also buff-knapper, buffe-napper, buffer-nabber) [nabber n. (1)]

[late 16C–mid-19C] a dog stealer.

bufe’s nab (n.) (also bufe’s nob, buffer’s nab) [nab n.1 (1)/nob n.1 (1)]

[late 17C–mid-19C] (UK Und.) a dog’s head used as a seal.

buffer-lurking (n.) (also tike-lurking) [lurking n. (1)]

[mid-19C] (UK Und.) stealing dogs.