Close Zoo: "Toxic agent" killed 34 reptiles Zoo Knoxville said the cause of death of its 34 reptiles was a toxic agent, though they're not sure the specific agent. 18 reptiles survived. WBIR 6:30 PM. EDT May 12, 2017 TRENDING VIDEOS Newport Animal Shelter likely to close Scanner audio of the moment the escaped Georgia inmates were captured Terrifying moments that led up inmates' surrender Suspect assaults officers during traffic stop Woman's surprise visit by Crusoe Deputies: Boy kept in harness bolted to floor Newport animal shelter could close Homicide charges for missing woman's daughter Search continues for escaped inmates Pet of the Week: Discounted Pet Adoptions More Stories Nashville church shooting: Masked gunman kills… Sep 24, 2017, 1:14 p.m. Authorities call Antioch church usher 'hero' for… Sep 24, 2017, 7:40 p.m. Summer-like warmth will be in place through midweek Dec 10, 2015, 10:15 a.m.