Related Clues:

• "The Far Side" critter
• Slide presentation
• One-celled protozoa (Var.)
• Microscopic organism with single cell
• Tiny one-celled animal
• Microscopic organism with single changing cell
• Microscopic organism of single cell constantly changing shape
• Tiny one-celled animal in water
• O, Mam, be a one-celled animal
• Freshwater or marine protozoa
• Microscopic organism consisting of a single cell changing constantly
• One-celled animal found in water
• Microscopic organism of single cell that changes shape constantly
• Organism with single cell changing constantly
• Tiny organism consisting of single changing cell