Lightning the German Shepherd
Acting
Biography
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.

The Case of the Howling Dog
1934
Prince (uncredited)

Wings in the Dark
1935
Lightning - Ken's Dog (uncredited)

Speed
1927
Lightning', a Dog

Renfrew of the Royal Mounted
1937
Lightning, Renfrew's Dog

White Fang
1936
White Fang

When Lightning Strikes
1934
Lightning

Two in Revolt
1936
Lightning - the Dog

A Dog of Flanders
1935
Leopold, 'Leo' the dog

Lightnin' Flashes
1926
Lightnin' - the Super Dog

Lightnin' Strikes
1925
Lightnin' - the Super Dog

Lightnin' Wins
1926
Lightnin' - the Super Dog

Man's Best Friend
1935
Lightning, Jed's Dog

The Lure of the Wild
1925
Shep the Dog