sentences:  The spokesperson also stated that African buffalo are extremely dangerous and although the two species co-exist in the wild, they should not have been placed together in an enclosed space.The British Columbia Society for the Prevention of Cruelty to Animals has launched an investigation of the incident, while the Vancouver Humane Society will ask the Canadian Association of Zoos and Aquariums to investigate the incident and review the zoo's accreditation.The zoo replaced the dead animals with two new zebras.