A key motion under consideration at the upcoming IUCN World Conservation Congress would create guidelines for managing the wildlife pet trade, and that’s key because across the world, millions of live animals - mammals, birds, reptiles and amphibians - are taken from the wild every year. The illegal and unsustainable wildlife pet trade depends on the appeal of live animals whose capture leaves forests and grasslands silent, stripped of the pollinators, seed dispersers and predators that keep ecosystems functioning. "The IUCN congress offers a crucial chance to turn global attention toward the pet trade, and its illegality and unsustainability. If we fail to act, this commerce will continue hollowing out ecosystems, spreading invasive species, and endangering health," a new op-ed argues. This post is a commentary. The views expressed are those of the author, not necessarily of Mongabay.