The Flehmen grin: When a lion smells something unusual, it wrinkles its nose and curls its top lip into a funny-looking grimace. This opens up the Jacobson's organ in the roof of its mouth, allowing it to "taste-smell" pheromones in the air to track mates or rivals.
The Flehmen grin: When a lion smells something unusual, it wrinkles its nose and curls its top lip into a funny-looking grimace. This opens up the Jacobson's organ in the roof of its mouth, allowing it to "taste-smell" pheromones in the air to track mates or rivals.