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?

What tiny creature makes a sound like a clock when its name is spoken? Solve the riddle → Which lion can't live on land? Solve the riddle → Which bird is known for its constant complaining? Solve the riddle → What do sheep say when they're disappointed at the movies? Solve the riddle → Which creature is known for its incredible speed, even in its name? Solve the riddle →