CALGARY - A second horse has been euthanized as a result of injuries suffered during the chuckwagon competition at the Calgary Stampede.

The Stampede's Chuckwagon Safety Commission says the latest horse was hurt in a collision between two rigs on Monday night.

The horse was euthanized on Tuesday after a veterinary consultation with its owner, B.J. Carey.

A horse was also euthanized on Saturday night after breaking a leg during the chuckwagon races.

On Tuesday, a national animal-rights organization called Animal Justice called on the Calgary Humane Society to prosecute "inhumane rodeo practices" at the Calgary Stampede.

The group says chuckwagon racing is so dangerous that more than 50 horses have been killed during the event at the Stampede since 1986.