[i have crabs]

also almost no animals if any are wild captured for a zoo thier all bred at other zoo's and traded in breeding programs or to a zoo with a suitable enclosure,
any wild animals that do end up in zoo's are rescue animals like the orphaned bears when the mother was killed by a logging truck, one of the eagles was found with broken wings and a missing eye and im sure their are lots of other man caused accidents that the zoo is now taking care of.

as for them doing research the calgary zoo is a huge supporter of animal sanctuaries around the world, i seen a yearly spending report for the zoo once and it spends crazy amounts of money on things around the world.