What is the egg stealing dinosaur?

Excuse me, could you please elaborate on the concept of an "egg stealing dinosaur"? Is this a reference to a specific species of dinosaur known for its behavior of stealing eggs from other nests, or is it a fictional creature from a movie, book, or other media? If it's a real dinosaur, could you provide some information about its scientific name, habitat, and any other distinguishing characteristics? Alternatively, if it's a fictional creature, could you tell me more about its origins and any notable appearances in popular culture?