The most frustrating of all dinosaur documentaries, WWD could've been the perfect media source for paleo-education. Unfortunately, it is plagued with an astonishing amount of errors that could've been rectified in the time it wa s being developed (the late nineties). Please do not let your kids view this as a reliable source: it isn't. For example, the T. rex has a badly deformed skull, shortened tail, the Dromaeosaurus lacks feathers (we knew that dinosaurs had feathers back then), Australovenator is improperly referred as a 'polar allosaur' (chalk that one up to time; Australovenator wasn't named back then) among other things. As for aesthetics, it's perfect. The visuals convince the viewers these are real animals, with a well done blend of life-size puppetry and computer-generated graphics. As for kid-appropriateness, there is a rather copious amount of breeding and gore, and the episode Cruel Sea is extremely scary, with the beefed-up (I say beefed-up because the real creature wasn't as big) Liopleurodon constantly savaging the camera at every turn, and Spirits of the Ice Forest has, for a documentary, an incredible feeling of surrealism and ominosity (and a brief decapitation scene) that may invoke anxiety in younger views.
However, it should be noted that this is THE dino-doc, the one that started it all, and, surprisingly, is one of the best despite being fifteen years old.