A pouncing cat is a common term used to describe a cat that is about to leap on its prey. The term is often used in reference to cats who are stalking their prey, such as birds or other small animals. When a cat is ready to pounce, it will lower its body close to the ground and extend its front legs out in front of it. Its rear end will be raised up in the air and its tail will be held straight out behind it. The cat's pupils will be dilated and its ears will be flattened against its head.