Irwin's mother and father were Lyn and Bob Irwin was born in Melbourne, Victoria, Australia. The family moved to Queensland in 1970, when Irwin was 8. Bob Irwin was very interested in reptiles (a type of animal that includes snakes and crocodiles). When the family moved, Bob and Lyn Irwin started the small "Queensland Reptile and Fauna Park". Irwin lived there until he became an adult.