A standard joke when you go on a safari is that in your country you have zebra crossings while over here we have real zebras crossing. There is not a zebra in sight in this set of pictures, but it does feature plenty of animals crossing the road. A gopher tortoise moves towards the space shuttle Discovery, seen sitting on the launch pad at the Kennedy Space Center in Cape Canaveral, Florida, July 3, 2006. NASA inspectors found a crack in the foam insulation of space shuttle Discovery's fuel tank and managers were meeting on Monday to decide how the crack might affect Tuesday's launch. A white rhino and its baby cross a road on the drying shores of Lake Nakuru in Kenya's Rift Valley, 160km (99 miles) west of the capital Nairobi, December 18, 2009. World leaders worked through the early hours to try and beat a Friday deadline for a deal on cutting emissions and helping poor countries cope with the costly impact of global warming. Vicunas cross National Route 40, near Huancar town in the Argentine Puna region of San Salvador de Jujuy, 3,900 metres (12,795 feet) above sea level August 7, 2010.