Flash was a German Shepherd Dog actor.
More details at TMDB
Honeymoon
1928
Call The Mesquiteers
1938
His Master's Voice
1925
The Flaming Signal
1933
Shadows of the Night
Under the Black Eagle
Hawkshaw - Tim's Dog (as Flash)
Wild Waters
1935
Flash
Crack-Up
1934
The Dog
Flash, Son of Thunder
