The term 'living creature' can be broken down into two crossword solutions: 'ANIMAL' (6 letters) and 'BEING' (5 letters). An ANIMAL is a living creature that is typically classified as a member of the kingdom Animalia, which includes mammals, birds, fish, reptiles, amphibians, and invertebrates. A BEING is a living creature that is typically defined as an entity or organism with a conscious mind, such as a human or other sentient creature.