Extremely expensive for a one-time visit. I get the feeling this place is not for "tourists", more for the local families. We were in the West Island visiting relatives and we needed a place to take the kids nearby. 2 adults & one 4 yo & one 3 yo cost us $47! And no they don't offer family rate! I get they want you to buy the membership to support the local species, but at this rate we'd rather visit the Biodome downtown for grander variety and scale.
Almost everything is outdoors, only the reptiles and fish are downstairs in the basement. However there was no elevator to get to the reptiles and fish except by stairs. So there we were with our big tandem double stroller (we still have a 2 yo & a 4 mo baby) awkwardly bumping our way down and dragging it up afterwards.
The outdoor exhibits were well organized, but the paths were either covered with snow or slush or mud because it's winter. Only the boardwalks were shoveled. Again, not the most stroller friendly design. It was about +2C the day we visited, but I can't imagine what it'd be like in colder days. To be honest I was surprised they were open at all because it's winter. And quite a few animals were not present due to the winter season which made the ticket price seemed even steeper.
I don't think we will return next time we are in town.