A dog running through an obstacle course.

A dog being led through an obstacle course.

A crowd watches jockeys race their horses at the Grand National. They jump over a high hedge and gallop off. One horse trips and the jockey tumbles to the ground.

Several jockeys race their horses at the Grand National. They jump over a high hedge in succession and gallop off.

Jockeys race their horses at the Grand National. They jump over a high hedge and gallop off.

Horses gallop through a field. When the horses get to the gate, they all squeeze through into the neighbouring field.

A crowd watches jockeys race their horses at the Grand National. They jump over a high hedge and gallop off.

Shot panning a barbed wire barricade.

Horses gallop through a field and jump over the gate.