Which animal in the animal kingdom has the best sense of smell?

The animal with the best sense of smell is generally considered to be the African elephant. Elephants have an extraordinary number of olfactory receptors—approximately 2,000—allowing them to detect scents from miles away. Their keen sense of smell helps them locate food, water, and even communicate with other elephants through pheromones. This remarkable olfactory ability surpasses that of many other animals, including dogs.