When it comes to describing living creatures, there are a plethora of synonyms to choose from. Some common alternatives to the term "living creature" might include animals, beasts, fauna, or even just creatures. Other options that highlight the biological nature of these organisms might include organisms, beings, or life forms. If you're looking for a more specific classification, you might consider using terms like mammals, birds, reptiles, amphibians, fish, or insects. Ultimately, the choice of synonym will depend on the context of the sentence and the intended emphasis on the characteristics of the creature in question.