What tiny creature makes a sound like a clock when its name is spoken?

I'm an animal renowned for moving at an extremely slow pace. If walking were a race, I'd definitely be last. What am I? Solve the riddle → Which bird is known for its constant complaining? Solve the riddle → Which lion can't live on land? Solve the riddle → Which creature is known for its incredible speed, even in its name? Solve the riddle → Which sea creature is perfectly suited for office work, always coming prepared with its own writing fluid? Solve the riddle →