It doesn't mention this in the article at all.
Did you read this tidbit from a different source?
I don't want to get into the whole is there or isn't there cougars in Ontario, but I will say that I worked Animal Control for about 5 years or so and in that time we got many calls about cougar sightings in the area.
(As if a dog catcher could do anything about a frigging cougar!

But you know, the locals thought we had dart guns, choppers, ATV's and God knows what else! HAHA!)
http:// ww.thestar.com/news/gta/article/1223871--cougar-shot-dead-in-muskokas-after-it-mauls-dog
Wendy Gillis
Staff Reporter
Ontario Provincial Police shot and killed a cougar on the weekend after it mauled a dog in a Muskoka town, an incident that provincial officials are calling “extremely rare.”
The attack occurred Saturday night in Utterson, southwest of Huntsville, at a home across the road from Guha’s Tiger and Lion Farm, an exotic cats menagerie.
Investigators have not confirmed a link between the attack and Guha’s, but they are “aware” of the zoo, said Jolanta Kowalski, spokesperson for the Ministry of Natural Resources.
The cat’s front claws had been removed, “which usually indicates that it can be an escaped or released captive animal,” she said.
Utterson resident Doreen Rick saw a large cat mauling Indy, her medium-sized shepherd mix, just after 10 p.m. Saturday.
“It dragged it across the lawn and just laid on him and chewed on him,” Rick said.
Rick, who was at home with her grandson’s girlfriend, Cassidy Phillips, phoned the police and immediately closed all the windows.
“It was pretty horrific,” said Phillips. “We had to just watch (the cougar) go at Indy.”
OPP officers arrived shortly and shot the cougar. Indy the dog was still alive but badly injured, so the family put it down, Phillips said.
Const. Maureen Tilson of the Bracebridge OPP detachment said police had been following up on sightings of a large cat for about a week before the attack.
Related:Rare cougar sightings stir concern in Mono
Marvin Zator, Rick’s next-door neighbour, spotted the large cat about a week ago and thought it was a bobcat. If the cougar was indeed a released pet, he wants the owner held responsible.
“Everybody around here has pets, grandkids or both,” Zator said.
Calls to Guha’s Tiger and Lion Farm Monday were not returned.
Kowalski stressed that cougar sightings are “extremely rare” in Ontario, and that people need not be fearful.
The animal’s carcass will undergo testing and DNA analysis this week.