Acknowledgements Images – Lion: Cody Kwok, Lion portrait www.flickr.com/photos/49859500@N00/4903020300, CC BY-NC 2.0 creativecommons.org/licenses/by-nc/2.0/, Brown Bear: Tambako The Jaguar, Brown bear portrait II www.flickr.com/photos/tambako/10055709303, CC BY-ND 2.0 creativecommons.org/licenses/by-nd/2.0/, Rhino: mariusz kluzniak, asian rhino portrait www.flickr.com/photos/39997856@N03/8695403486, CC BY-NC-ND 2.0 creativecommons.org/licenses/by-nc-nd/2.0/, Kangaroo: Mike Lewis, Kangaroo www.flickr.com/photos/mikelewis/1546328029, CC BY 2.0 creativecommons.org/licenses/by/2.0/, Polar Bear: Valerie, Hello! www.flickr.com/photos/ucumari/1126580543, CC BY-NC-ND 2.0 creativecommons.org/licenses/by-nc-nd/2.0/, Penguin: Christopher Mickel, Emperor Penguins www.flickr.com/photos/cmichel67/11278910216, CC BY-NC 2.0 creativecommons.org/licenses/by-nc/2.0/ © 2014 Education Services Australia Ltd, unless otherwise indicated. Provided acknowledgements are retained, Education Users may use, reproduce and communicate this material free of charge for non-commercial educational purposes until 30 June 2018, unless otherwise indicated.