VANCOUVER—The killings took place over two days. The dogs were rounded up, shot or stabbed and left in a mass grave.

As the slaughter went on, the animals made “guttural sounds” and had “fear in their eyes,” according to WorkSafe B.C. documents.

Nearly 10 months after the dogs were killed in Whistler in what the B.C. SPCA has called “an absolute massacre,” the RCMP is investigating and the Vancouver Humane Society is calling for an immediate ban on all dog-sled tour operations in the province.

In the documents, which were obtained by radio station CKNW and the SPCA, the general manager of Outdoor Adventure Whistler gave disturbing descriptions as to how he killed 100 healthy sled dogs after the tourism industry in the ski resort took a downturn following the Olympics last year.

The killings, which came to light after the employee filed a claim saying he was suffering post traumatic stress disorder, have sparked outrage from as far away as Peru and Australia. The employee received monetary compensation for his suffering from the workers compensation board.

Marcie Moriarty, general manager of cruelty investigations for the SPCA, said she had trouble reading the documents when she received them.

Reading aloud from the report, Moriarty said the worker gave detailed descriptions of how the dogs were killed.

“One dog named Susie had the left side of her cheek blown off.”

Another dog named Nora, severely injured, attempted to crawl out of the mass grave, but the worker climbed down to kill her.

Moriarty said it sickens her that the employee received compensation for committing what she called a “criminal act.”

While it’s legal to euthanize your own animal with a single shot to the head, it is an offence under the criminal code to cause an animal to have pain and suffering.

Moriarty said some dog-sledding tours are well-run and the dogs remain with the family when they’re too feeble to run. But many such operations use these dogs and later have them killed or try to dump them with rescue organizations.

Outdoor Adventures Whistler said in a statement it has only recently learned of the “tragic and regrettable events regarding a cull of animals” and did not instruct its general manager to carry out the killings in the manner described in the Workers’ Compensation Board report.

The company “was aware of the relocation and euthanization of dogs,” said the statement. “But it was our expectation that it was done in a proper, legal and humane manner.”

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The worker ceased managing the business in late April, according to Outdoor Adventures Whistler.

Tourism Whistler spokesman Bret Murphy said the company has agreed with the tourism group’s decision to suspend any further dog sled tours until the RCMP and SPCA investigations are done.