The parent organization of the Toronto Humane Society has suspended the society's affiliate status.
The Ontario Society for the Prevention of Cruelty to Animals has also launched an investigation into the way the humane society cares for animals, which has been accused of allowing the unnecessary suffering of animals through its euthanasia policy.
The SPCA probe comes as a result of an investigative series by The Globe and Mail.
The SPCA has said there are also allegations concerning governance at the Toronto Humane Society, which operates independently but is accountable to the SPCA.
The investigation could result in criminal charges.
Kate MacDonald, the chief executive of the animal welfare agency, said they are "extremely concerned' an affiliate is alleged to be conducting business in such a manner.
With files from The Canadian PressShare Tools
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