Time-traveling animal rescues are hokey at best.
Parents need to know that the stars of this show are computer-generated versions of prehistoric creatures, including dinosaurs, massive insects, and giant crocodiles. The animals are shown in re-created versions of their natural habitats and at actual size (proportional to humans), and they're often aggressive toward humans and vicious with each other (biting, goring, and eating what gets in their way). Although the graphics aren't first-rate, the result is real enough to frighten young viewers and sensitive older ones. On the flipside, the show does allow viewers to visualize the world and its inhabitants as scientists theorize it may have been millions of years ago.