Dr Amir Khalil thought he was just going on another job. The veterinarian from the Vienna-based charity Four Paws International had been invited to Pakistan, where he was tasked with training a five-tonne Asian elephant in preparation for his relocation to a sanctuary in Cambodia. Kaavan had spent more than 30 years in the Marghazar zoo in Islamabad, after being gifted to Pakistan by Sri Lanka in 1985.