The first congress welcomed 230 delegates from 27 countries to Avifauna Bird Park. Alongside the conference programme, participants visited Burgers’ Zoo and Artis.

The second congress took place at the Gold Coast International Hotel, bringing together 240 delegates from 24 countries. The programme included visits to Dreamworld, Currumbin Wildlife Sanctuary and Sea World.

The third congress ran jointly with the 36th AAZK National Conference at the Red Lion Hotel. More than 400 delegates from 24 countries gathered under “One World, One Zoo”. Activities included an icebreaker at Seattle Aquarium and a full day at Woodland Park Zoo.

Wildlife Reserves Singapore—comprising Singapore Zoo, Night Safari and Jurong Bird Park—hosted the fourth congress. Themed “Many Voices, One Calling”, it welcomed 245 delegates from 32 countries.

The 5th International Congress on Zookeeping was hosted by Leipzig Zoo under the theme “Let’s Zoocialize”. The congress brought together 215 delegates from 30 countries.

The 6th International Congress on Zookeeping was hosted by Fundación Temaikèn under the theme “Thinking Today – Keeping Tomorrow”. It was the first bilingual ICZ congress, held in both English and Spanish, and welcomed 115 delegates from 26 countries.

The 7th International Congress on Zookeeping was hosted by Barcelona Zoo and held jointly with the 8th AICAS Congress. Continuing the bilingual format, the event took place in English and Spanish under the theme “Conserving our future”. It brought together 197 delegates from 26 countries.

The 8th International Congress on Zookeeping was proudly hosted by Wellington Zoo and held jointly with the 2025 ASZK Annual Conference. Under the theme “Me Tiaki, Kia Ora!” (We must look after our environment so all life will flourish), we brought together 135 attendees from 13 countries.