Short Answer 
The riddle uses incorrect numbers for the legs of a cow and a girl as a play on words, which should be approached as a riddle rather than a factual statement. A cow has 4 legs, while a girl has 2, and rephrasing the riddle to reflect these facts clarifies the confusion.
Step 1: Understand the Riddle
The riddle presents incorrect numbers for the legs of a cow and a girl. It’s essential to identify that this statement is a play on words rather than a factual statement. Recognizing it as a riddle allows us to approach it with the understanding that the numbers are intentionally mixed up.
Step 2: Identify the Legs
In reality, a cow has 4 legs because it is a quadruped. Conversely, a girl, being a biped, has 2 legs. It’s crucial to highlight the biological facts behind each character involved in the riddle.
Step 3: Correct the Statement
With the accurate information in mind, we can rephrase the riddle for clarity. The correct statement reflects the true number of legs: ‘A cow has 4 legs and a girl has 2 legs.’ This correction resolves the confusion created by the original wording of the riddle.