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The story of an Old West town being scared by a Therizinosaurus ends with Deputy Hannah saving the day; Trek investigates why herbivores stick together in a giant migrating herd.

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Ms. Carver's class gets a new addition in the form of mystery eggs, and Dan just knows one of them is a dinosaur egg! When Trek and Tristan find a bone in the schoolyard, Dan uses a papier-mâché skull in Mrs. Hahn's art class to figure out if it came from the Stygimoloch.

Dan figures out how to prove if dinosaurs were warm-blooded from Jim the reptile lizard and his puppet Denny the Dromaeosaurus. Dan wants to see the Euoplocephalus use its powerful tail while Trek wants to see it snow. Can both Henderson boys get their wish?

Dan tries to save his Mom's garden from a sneaky Compsognathus by dino-trapping it, but ends up trapping a baby T. rex instead. Dan makes reading buddy time more interesting by turning the classic tale of Little Red Riding Hood into a dinosaur epic featuring the Spinosaurus.

Dan makes a mask in Mrs. Hahn's art class to get closer to the Edmontosaurus herd but he needs Angie's help too. Dan uses a French horn to communicate with a couple Corythosauruses.

Jim the reptile expert, returns to Mrs. Carver's class with a chameleon prompting Dan to question if the Stegosaurus could change the color of its plates. The kids make a stop-motion animation movie for art class that features the T rex, but Angie and Dan can't seem to agree about certain T. rex "facts."

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When a Pterodactylus gets stuck in the house it's up to Dan, Mom, Angie, and Trek to get it out. Dan uses the art of disguise to get his Remote Dino Cam into a Triceratops nest, but the real test comes when a T. rex threatens the safety of the babies.

Dan teaches a baby Triceratops defensive moves to help it get around a meat-eating Spinosaurus. When Cory's snack goes missing, Dan knows who took it... a Dromaeosaurus. Now he's just got to track it down and get Cory's snack back.

The school bus has a huge dent in it. Dan has three suspects: the Euoplocephalus, the Stegosaurus, or the Stygimoloch. When a T. rex backs down from a Triceratops, Dan learns that there's more to the T. rex than he knows.

A Christmas Special: Dan takes the poem "Twas the Night Before Christmas" and gives it a dinosaur spin. Dan learns whether or not the Stygimoloch would flee from a Tyrannosaurus rex or stand and fight.

Dan figures out which dinosaur left a prehistoric "droppings" with the help of his friends Jim the reptile expert and Denny the Dromaeosaurus. Kami, Ricardo, and Dan learn that dino gas might have helped cause the extinction of the dinosaurs, and can't wait to share that info with the class.

A routine visit to the dentist's office becomes a dinosaur experiment when Dan learns how the shape of dinosaur teeth can help prove if the dinosaur was a carnivore or a herbivore. Dan tests the attack patterns of the Dromaeosaurus, Spinosaurus and a T. rex by using a snow Triceratops as a decoy.

Dan learns how dinosaurs get their names when he discovers what he thinks is a new dinosaur but is actually the Diplodocus. While at the park with Uncle Jack, Dan finds a feather that he thinks belongs to a Dromaeosaurus. But, before he can prove it, his dog Doug goes missing. Uh-oh.

At bedtime, Dan is more interested in proving that there's a Compsognathus under his bed than in going to sleep. In art class, Dan and his friends are making a kite inspired by the Quetzalcoatlus. The big question is . . . will the kite fly?

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While Uncle Jack teaches Dan to fish, Dan teaches Uncle Jack all about dinosaurs and pterosaurs. When Dan goes to the grocery store with Mom, it's up to Doug to save a baby Edmontosaurus from a Dromaeosaurus.