1. The zodiac animal is the snake, and the numbers are 6 and 7. 2. Let's first decode the key information in the riddle "In the fire, there is a zodiac sign that represents the numbers six and seven."3. "In the fire" might refer to a zodiac animal or attribute related to fire.4. In traditional Chinese culture, zodiac animals are often associated with the five elements (metal, wood, water, fire, earth).5. Considering this, "in the fire" might hint at a zodiac animal belonging to the "fire" element.6. "There is a zodiac sign that represents the numbers six and seven" could mean that this zodiac animal is associated with the numbers six and seven.7. In the order of the zodiac animals, the snake is the sixth animal, corresponding to the number 6.8. The number 7 might represent a special meaning of the snake in certain cultures or traditions.9. Alternatively, the number 7 could be a symbolic number related to certain attributes or characteristics of the snake.10. Such indirect connections are common in riddles and symbolic language.11. Additionally, if we consider the riddle from a wordplay perspective, "In the fire, there is a zodiac sign that represents the numbers six and seven" might be a play on words.12. For instance, the character for "fire" shares some shape similarities with the character for "snake" (especially in certain calligraphic styles).13. "Six and seven" can be seen as a hint to the order of the zodiac animals.14. Taking all the above points into account, we can conclude that the zodiac animal is the snake and the numbers are 6 and 7.15. This answer fits both the traditional correspondence between zodiac animals and the five elements and the clues provided by the numbers and wordplay in the riddle.16. Of course, there may be multiple interpretations of the riddle, but this answer offers a reasonable and interesting interpretation.