There are a number of synonyms you could use for the term "vagrant hedgehog." For instance, you might refer to these animals as "wandering hedgehogs," "homeless hedgehogs," or "transient hedgehogs." Other possible terms might include "drifter hedgehogs," "nomadic hedgehogs," or "errant hedgehogs." Ultimately, the term you choose may depend on the context in which it will be used. Whether you are writing about hedgehogs in a scientific context or a more creative one, there are many words that can be used to describe these fascinating creatures as they move around in search of food, shelter, and safety in the wild.