Today the ACT Government announced it would discontinue its financial support for the industry.
"The government cannot continue to support an industry that is turning a blind eye to the sort of behaviour and cruelty uncovered by the Special Commission of Inquiry," Mr Barr said in a Facebook post.
"It is untenable for the ACT government to continue allowing, and financially supporting the practice of greyhound racing."
The decision follows an announcement by NSW Premier Mike Baird earlier today that Greyhound racing would end in the state from July 2017.
Greyhound Racing NSW has suspended all racing for the next seven days following the NSW government's shock decision to ban the sport from July next year.
The organisation says the industry is devastated by the state government's decision and it's an extremely sad for the sport and those involved in it.
Greyhound Racing NSW says the decision announced by Premier Mike Baird will rock everyone involved in the sport.
Mr Baird made the announcement on his public Facebook page, saying the decision followed "widespread illegal and unconscionable activity, including the slaughtering of tens of thousands of dogs."
"More than a year ago, we established a Special Commission of Inquiry into the greyhound industry after very disturbing reports emerged of cruelty to animals and other illegal activities," the post said.
"We have now received the report of the Commission, conducted by former High Court Judge Michael McHugh, and the findings are damning."
In a statement released on Thursday, Greyhound Racing NSW said the decision to ban racing from July 1 next year would rock everyone involved with the sport.
"Today is an extremely sad day for the NSW greyhound racing industry and the people involved in it," a GRNSW spokesman said in the statement.