Penguins!
The Biodome in Montreal was once the home of cycling and judo Summer olympics, but has now been converted into an indoor nature exhibit. There was 4 different exhibits: Tropical, Lauretian Forest, Marine and Polar eco systems.
The Polar was definitely the coolest. There was tons of penguins the Arctic has 2 variations and the Antartic had 4 different kinds. The penguins are super friendly and swim right up to the glass to say hellos. Well maintained place, with lots of different animals and habits. The tropical rain forest was my second favorite, mainly because I've never been in a rain forest.
Came on a weekday and was able to find plenty of free street parking. We bought Biodome tickets for $16, bring your student ID for a $4 discount!.