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Sid's grandmother visits his school and administers flu shots, prompting Sid to learn about how vaccinations work.
The Pteranodons meet a plant-eating sauropod named Allie; the kids learn about nocturnal and diurnal animals while on an overnight camping trip with Dad.
The kids meet a big and long dinosaur named Denise; Shiny wants everything to be perfect when Gilbert, Mr. Conductor's nephew, visits the Pteranodons.
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