A cute little farm right in the city! I came here for the first time recently, which is proof that no matter how long you live in Toronto there are always new things to discover. It's free to go in (but donations are welcome) and look at the farm and animals -- everything from pigs, chickens, sheep, a pony, and my favourite - baby goats! So cute. Obviously this place is popular with kids and there were lots of families. There are some discovery walks passing through here. One of them takes you to a quiet pond and another path goes to a bridge over the DVP which takes you to Riverdale Park East -- also highly recommended!
I'd recommend the farm to anyone looking for something off-beat to do in Toronto. It's also a good place to combine with wandering around the Cabbagetown neighbourhood. Lots of good places to stop for a drink or snack (e.g. Cafune, It's Jenny cafe, Jet Fuel, Omi, Kingyo, Gourmet Burger Co.).