Lightning the German Shepherd
Lightning was a German Shepherd from a line of canine silent film stars. A grandson of Strongheart, Lightning was billed as "The Wonder Dog" and "The Marvel Dog". He began life as a runt but grew to be larger than average for the breed, and he was very intelligent. Lightning appeared in numerous movies. From Wikipedia.
Speed
(Lightning', a Dog)
Lightnin' Flashes
(Lightnin' - the Super Dog)
Lightnin' Strikes
(Lightnin' - the Super Dog)
When Lightning Strikes
(Lightning)
Wings in the Dark
(Lightning - Ken's Dog (uncredited))
Renfrew of the Royal Mounted
(Lightning, Renfrew's Dog)
Two in Revolt
(Lightning - the Dog)
The Case of the Howling Dog
(Prince (uncredited))
Lightnin' Wins
(Lightnin' - the Super Dog)
White Fang
(White Fang)
Man's Best Friend
(Lightning, Jed's Dog)
A Dog of Flanders
(Leopold, 'Leo' the dog)