Tested on lupu 5.0, this one should "just work" out of the box, no extra dependencies needed:
pidgin-2.7.2.pet 3.62 MB
For puppy 4.1.x:
pidgin-2.7.2-i486-410.pet
7.36 MB
Pidgin 2.7.2
Pidgin 2.7.2
puppy.b0x.me stuff mirrored [url=https://drive.google.com/open?id=0B_Mb589v0iCXNnhSZWRwd3R2UWs]HERE[/url] or [url=http://archive.org/details/Puppy_Linux_puppy.b0x.me_mirror]HERE[/url]