Sit-and-wait predators

Ambush predators or sit-and-wait predators are carnivorous animals or other organisms, such as some nematophagous fungi and carnivorous plants, that capture or trap prey by stealth or by strategy (typically not conscious strategy), rather than by speed or by strength. In animals, ambush predation is characterized by an animal scanning the environment from a concealed position and then rapidly executing a surprise attack.

Animal ambush predators usually remain motionless (sometimes hidden) and wait for prey to come within ambush distance before pouncing. Ambush predators are often camouflaged, and may be solitary animals. This mode of predation may be less risky for the predator because lying-in-wait reduces exposure to its own predators.

So long as the active predator cannot move faster than its prey, it has little advantage over the ambush predator. However, if the active predator's velocity increases, its advantage increases sharply.

There are many intermediate strategies for ambush predators; for example, when a pursuit predator is faster than its prey over a short distance, but not in a long chase, then either stalking or ambushing becomes necessary as part of the strategy.

There are, however, many dimensions to predation and many overlapping strategies; for example some predators exploit predictable prey pathways that offer opportunities intermediate between ambush and pursuit. Animals with such strategies include cats of all sizes, crocodiles and some insects such as predators that haunt ant trails. Ambush predators include many fish, snakes, and other reptiles, as well as some mammals, birds, insects and spiders.

Though capable of sprinting, the cougar is typically an ambush predator. It stalks through brush and trees, across ledges, or other covered spots, before delivering a powerful leap onto the back of its prey and a suffocating neck bite. The cougar is capable of breaking the neck of some of its smaller prey with a strong bite and momentum bearing the animal to the ground. The head of the cat is round and the ears are erect. Its powerful forequarters, neck, and jaw serve to grasp and hold large prey. It has five retractable claws on its forepaws (one a dewclaw) and four on its hind paws. The larger front feet and claws are adaptations to clutching prey.

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