Pupils from Bushmead Primary School enjoyed a visit from a six foot dinosaur which was part of a Year 2 history project.
Children in Year 2 studied fossils and bones and learned how artefacts are discovered and preserved during a workshop held on the morning of January 17.
In the afternoon, the whole school came together for an assembly and a surprise visitor.
Members of the Education Group, which visits schools and organises workshops, talked to pupils about baby dinosaurs and then showed them a six-foot adult creature which moved around the stage and gave them some idea of the animal's power.
A spokeswoman from the school, in Eaton Socon, said: The children absolutely loved it and when the baby dinosaur attempted to bite Mr Leonard's fingers, they found it very funny."
The animatronic T-Rex is a life-like full body costume that is worked by a puppeteer.
The female T-Rex has animatronic features and a realistic roar which is aimed at creating a real experience.