Yes, this!
"There are problems abound in this situation. Neglectful parents can take their children to zoos to gawk at captive gorillas. Trigger-happy zoo response teams with little idea how to work with the exceedingly smart animals before them are permitted to shoot them. But these are minor problems. The major problem is that the Cincinnati Zoo is legally permitted to treat such extraordinarily cognitively complex and gentle animals as slaves in order to sell tickets to gawkers, and that Harambe, like every other nonhuman animal, was a legal “thing” that lacked the capacity for any legal rights, even the fundamental rights to his life and liberty." ^^from Shyvas's link ∆∆∆