
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.

Renfrew of the Royal Mounted
1937
Renfrew of the Royal Mounted

White Fang
1936
White Fang

Two in Revolt
1936
Two in Revolt

A Dog of Flanders
1935
A Dog of Flanders

Wings in the Dark
1935
Wings in the Dark

Man's Best Friend
1935
Man's Best Friend

When Lightning Strikes
1934
When Lightning Strikes

The Case of the Howling Dog
1934
The Case of the Howling Dog

Speed
1927
Speed

Lightnin' Flashes
1926
Lightnin' Flashes

Lightnin' Wins
1926
Lightnin' Wins

The Lure of the Wild
1925
The Lure of the Wild

Lightnin' Strikes
1925
Lightnin' Strikes