Irish Setter
Ch Red Aye Scraps
Copper is the fox. The dog in the movie is a bloodhound.
I believe it was "The Biscuit Eater."
"Little Dog Lost" (1963) on the Wonderful World of Disney.
The Shaggy Dog 1959
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Shepard
The Fully awesome Bolt, is a white American shepherd dog
Billy Joel played a dog in Disney's Oliver and Company.
Eight Below
I think it was The Little Mermaid.
Big Red, a Disney film based on the novel by Jim Kjelgaard, is about a Dog, not a Horse. It is possible the name may have been applied to the Race Horse, Secretariat but as a film title- Big Red is Canine, not Equine! The Dog was being trained for some type of sporting competition, though. It was produced by Walt Disney sometime in the early fifties. There was a shot of a Diesel Locomotive at high speed on a branch line near the farm, evidentally- but this played no role in the plot. It is odd how they sneaked it in.