What type of animal was seabiscuit?

Answer 1

Seabiscuit, like many Thoroughbreds, could be tempermental and/or highstrung. They first tried Whiskers the goat, which ended badly for the goat. He had to be removed for his safety. But the Biscuit had other four legged friends. Several dogs, another older horse named Pumpkin, and a spider monkey (the monkey had two legs).

Answer 2

The legendary racing horse named seabiscuit was a HORSE. He was a thoroughbred :)