Beautiful Female Poodle

Once there three male dogs who set eyes on a beautiful female poodle.
They all rushed over to her.
Aware of her charms, she said :
- I will go out with the first one of you who can use the words 'liver' and 'cheese' together in an intelligent sentence.
Immediately the Lab said :
- I like liver and cheese.
- No imagination at all, said the poodle.
Next was the muscular Rottweiler, who blurted :
- I hate liver and cheese.
- That's worse than the Lab,she replied.
Finally a tiny chihuahua smiled at his opponents, gave the poodle a knowing wink, and said :
- Liver alone, cheese mine.