The SPCA of Erie County will be conducting an independent review of the Niagara County SPCA.
SPCA of Erie County executive director Barbara Carr tells WBFO News her board agreed to conduct the review.
Niagara County SPCA Executive director John Faso is accused of a high number of dog and cat euthanizations and poor medical treatment of animals.
Carr said controlled substances are used to put animals to sleep and must be recorded.
Carr will be checking reasons why the animals were put to death.
"Why the animals were euthanized is certainly going to be up to some of interpretation," said Carr.
The Niagara County SPCA Board of Directors requested the investigation.