Originally Posted by
billdokes
Just claim they are emotional support cats
Dogs are the only service animals Air Canada accepts, and you'll need to submit a sworn statement from a mental-health professional in advance of your flight, identifying both the need for a service animal, and the identity of the specific animal performing this role.
Also worth noting that the United States is currently revising its rules on support animals, and AC flights to/from the US may be affected in future. Check carefully before making your plans.