Some synonyms for the phrase "pale hedgehog" might include "light-colored hedgehog," "blanched hedgehog," or "pallid hedgehog." Other options might include "ashen hedgehog," "colorless hedgehog," or "faded hedgehog." The specific synonym chosen may depend on the context in which it is used, as well as personal preference. Regardless of the specific term used, however, it is clear that we are referring to a hedgehog that is lacking in color or pigmentation, giving it a distinctly pale or washed-out appearance.