I'm not aware of a boom this year; I actually haven't seen one this year.
I live very close to one of the City's ravines; and I can hear a pack howl almost every night, usually around 11pm.
But I've only see them in Toronto twice that I recall (though they are quite common.)
Once, in an east end ravine; where I encountered one in the backwoods......with a dead racoon in its mouth.
It looked at me for a moment. I told it to move along and it did ...............
The other time was High Park. Right alongside Spring Creek Trail.
On the Spit, my one great sighting was a Bald Eagle.
Lots of waterfowl.
But don't think I've otherwise encountered anything bigger than a rabbit there.
Overall in Toronto, I've seen:
Cottontail Rabbit
Bald Eagle
Fox
Mink
Muskrat
Beaver
Turkey Vulture
Red Tail Hawk
Cooper's Hawk
Snowy Owl (only once)
White-Tail Deer
Egret
Great Blue Harron
King Fisher
Wood Duck
Smooth Green Snake
Milk Snake
Lots of the usual suspects!
Things I have not seen in Toronto that I would love to see
River Otter (considered extirpated, but may be returning. I believe they are present in the East Don north of Sheppard.
Fox Snake
Northern Water Snake (not too close, looks like the Mississauga Rattler if you're not paying attention!)
A nesting Bald Eagle
Barred Owl
Lots more.
In the fullness of time, I think it would be nice if the north end of Rouge Park could support Bears again; though I suspect others would disagree.
I also think Badger would be nice to see; but they are a terribly ornery creature, LOL. Not everyone would welcome that.