What would happen if the animals went berserk and attacked humans on sight? What if your pet chimp killed your recently ex-girlfriend and left her half eaten/disembodied in your apartment? How about being attacked by rats while walking down the street minding your own business?
In Zoo, the animals attack, as suddenly humans have become the enemy. The advancement in science has finally disturbed animals on a molecular level that we are scrambling to understand.
Good story but not a future I would look forward to.