I want to know the answer to the following question:
What species shows more difference in size, looks and actions than any other?
All the background I'm provided with is that "Dogs are predators and scavengers, and like many other predatory mammals, the dog has powerful muscles, fused wrist bones, a cardiovascular system that supports both sprinting and endurance, and teeth for catching and tearing.". Is that enough to answer the question?
Answer: no