There are no advance preparations necessary. Below are some statements you will read to the children. If they believe it can truly happen, they stand up. If they do not believe it, they remain in their seats. Camels can go for many days without drinking.
Elephants are pregnant for two years.
A chameleon's tongue is as long as its whole body. A dog sweats when it is hot. A spider in South America can eat birds. There are more insects than animals living on our planet. The earth can stop spinning and turning for several hours so time appears to go backwards.