Why on God's green earth did anyone dream up this 1938 stunt? To quote the narrator, "Your guess is as good as mine."
This poor horse chased a handful of sugar and towed a fat, useless human named "Shorty Roberts," as it swam the Golden Gate just to settle a bet about whether horses can swim:
The swim took 23 minutes and 15 seconds---an hour less than it had taken an Olympic swimmer. When Blackie and Shorty arrived in SF, the SPCA was waiting, but admitted that Shorty looked much worse than the horse and didn't cite him. Shorty always insisted that the horse loved swimming in the bay.
Sure he did, and why not?
Recommended book: Historic Photos of San Francisco