Bolt!

One of the most famous long-necked dinosaurs, Brachiosaurus was once a huge, slow-moving plant-eater. Reluctant readers discover what life was like for this Jurassic dinosaur through diagrams,...

With a long, whip-like tail and equally long neck, Diplodocus was once called the longest dinosaur." Reluctant readers discover what life was like for this Jurassic sauropod through diagrams, graphs,...

With knife-like teeth, Allosaurus was once a fearsome, giant predator. Reluctant readers discover what life was like for this Jurassic dinosaur through diagrams, graphs, powerful illustrations, and...

One of the most famous long-necked dinosaurs, Brachiosaurus was once a huge, slow-moving plant-eater. Reluctant readers discover what life was like for this Jurassic dinosaur through diagrams,...

With a long, whip-like tail and equally long neck, Diplodocus was once called the longest dinosaur." Reluctant readers discover what life was like for this Jurassic sauropod through diagrams, graphs,...

With a distinctive large sail and a crocodile-like snout, Spinosaurus was once one of the largest dinosaurs around. Reluctant readers learn about this Cretaceous predator through diagrams, graphs,...

With a short bill to scoop up food, the bird-like Gallimimus once sprinted across the land on two legs. Reluctant readers discover what life was like for this Cretaceous dinosaur through diagrams,...

Millions of years ago, Giganotosaurus was an eating machine. With ridged teeth and sharp claws, it once hunted herbivores even bigger than itself in swampy lands. Now, this big and fast carnivore...

With wide, flat heads, sharp teeth, and barbel sensors, goonch catfish are fascinating ambush predators. Reel in reluctant readers with leveled hi-lo text and infographics about this fish's features,...

With two huge fangs to spear prey, payara are fearsome predatory fish. Reel in reluctant readers with leveled hi-lo text and infographics about this fish's features, Amazon River habitat, and hunting...

With needle-sharp teeth, alligator gar are fierce predatory fish. Reel in reluctant readers with leveled hi-lo text and infographics about this fish's features, North American habitat, and hunting...

With dagger teeth and a strong swimming ability, goliath tigerfish are powerful predatory fish. Reel in reluctant readers with leveled hi-lo text and infographics about their features, Amazon River...

With a short bill to scoop up food, the bird-like Gallimimus once sprinted across the land on two legs. Reluctant readers discover what life was like for this Cretaceous dinosaur through diagrams,...

With sharp, ridged teeth, Giganotosaurus once hunted in swampy lands. Reluctant readers discover what life was like for this Cretaceous dinosaur through diagrams, graphs, powerful illustrations, and...

With jaws as strong as bolt cutters, golden dorado are powerful predatory fish. Reel in hi-lo readers with leveled text and infographics about their features, South American habitat, and hunting...

With dagger teeth and a strong swimming ability, goliath tigerfish are powerful predatory fish. Reel in hi-lo readers with leveled text and infographics about their features, habitat, and hunting...

Slimy and slippery, New Zealand longfin eels are crafty predators that rely on their sense of smell. Reel in reluctant readers with leveled hi-lo text and infographics about this fish's features,...

With strong flippers and shark-like teeth, Mosasaurus once ruled the oceans. Reluctant readers discover what life was like for this Cretaceous sea reptile through diagrams, graphs, powerful...

Slimy and slippery, New Zealand longfin eels are crafty predators that rely on their sense of smell. Reel in hi-lo readers with leveled text and infographics about this fish's features, habitat, and...

With two huge fangs to spear prey, payara are fearsome predatory fish. Reel in hi-lo readers with leveled text and infographics about this fish's features, Amazon River habitat, and hunting...

With a wingspan the size of a small plane, Quetzalcoatlus once soared over the landscape. Reluctant readers discover what life was like for this Cretaceous flying reptile through diagrams, graphs,...