Newest in The Ten Dinosaurs series: 

THE COOL DINOSAUR CAMPOUT 

     The dinosaurs are having lots of fun on their campout.  But one of the dinosaurs is off doing something else.  Meanwhile, a mysterious voice is heard.  Who or what is it?  And where is the 10th dinosaur?  As with the other books in the series, the reader can use the numbers in the words and pictures to predict the ending.