Cat senses roof of their mouths called the vomeronasal (or Jacobson's) organ. When a cat wrinkles its muzzle, lowers its chin, and lets its tongue hang a bit, it is opening the passage to the vomeronasal. This is called "gaping", "sneering", "snake mouth", or "flehming". Gaping is the equivalent of the Flehmen response in other animals, such as dogs, horses and big cats. A cat has about twenty-four movable vibrissae ("whiskers"), in four sets on each upper lip on either side of its nose (some cats may have more). There are also a few on each cheek, tufts over the eyes, bristles
Dog–cat relationship "ate each other up." In Fam Ekman's children's book "Kattens Skrekk" ("The Cat's Terror"), a cat visits a museum to find that all of the artworks, like "Mona Lisa" and Venus de Milo, have been replaced by parodies featuring dogs. The only piece not converted is "The Scream" which "symbolizes the cat's terror in the face of so many dogs." The American animated television series "CatDog" featured the adventures of the protagonist, CatDog, a genetically altered creature that had the head of a dog on one side of its body and the head of a cat on the other. The