The Calgary Humane Society wants changes at the Calgary Stampede, but says it can't do it alone.
The society says for significant change, the public has to speak out.
Another horse had to be put down Monday night after the chuckwagon races.
This means four animals have died in just over 24 hours.
The most recent death happened last night during the chuckwagon races.
Chuckwagon driver Kelly Sutherland told CTV Calgary that the injured horse belonged to one of his outriders.
The animal had to be euthanized after suffering a shoulder injury on the track.
Kelly Sutherland said, "He just took a bad step and broke his shoulder up high. He didn't seem to have any problems. But nobody likes to lose a good horse but its part of the game.)"
The outrider was not hurt.
Monday a horse broke its back in the novice saddle bronc competition and had to be put down.
And earlier in the day a chuckwagon horse had an apparent heart attack during a routine practice run.
On Sunday night during the team cattle penning competition a horse ridden by Amy Carver also had a sudden heart attack and died.
When the horse went down, Carver hit her head and the horse rolled onto her.
She is currently in intensive care.
Calgary Stampede veterinarians say while four horse deaths in such a short time is unusual it's not something that could have been prevented.
Stampede Veterinarian Greg Evans says, "The forces that play on their body are very dramatic but none of them were necessarily things that we would predict or expect to happen."
The Calgary humane society says it is deeply saddened by the recent deaths and is appealing to the public to make their views known.
Desiree Arsenault of the Calgary Humane Society says, "It's just a matter of looking at the use of animals in the entertainment industry and deciding whether that's something society wants to continue. It's going to be a society change. It's going to have to be people voicing their opinions in order to make this change."
Calgary stampede officials admit so many deaths in such a short time is bad for their image.
Doug Fraser of the Calgary Stampede told CTV Calgary, "We have a big target on our back so to speak. We know that, but we need to keep moving on. We are very confident right now in the general direction as to where we are going."
Along with the Calgary Humane Society, animal rights activists are also calling for an end to the rodeo and chuckwagon racing.
But the Stampede maintains that won't happen.
Those events are here to stay.
