Carolina the giant rat retires as a hero after saving many lives -- Last year, African giant pouched rats like Carolina prevented nearly 400,000 new cases of a deadly disease. It's possible because of their extreme sense of smell.

Hero rat Carolina retires! 🎉 This giant pouched rat saved nearly 400,000 lives last year using her incredible nose to sniff out disease. #HeroRat #GiantPouchedRats #DiseaseDetection #AmazingAnimals