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Sometimes predator and prey find themselves in an evolutionary arms race, a cycle of adaptations and counter-adaptations.

Predation has been a major driver of evolution since at least the Cambrian period.

If it chooses pursuit, its physical capabilities determine the mode of pursuit (e.g., ambush or chase).

There is a continuum of search modes with intervals between periods of movement ranging from seconds to months.

Sharks, sunfish, Insectivorous birds and shrews are almost always moving while web-building spiders, aquatic invertebrates, praying mantises and kestrels rarely move.

If the attack is successful, the predator kills the prey, removes any inedible parts like the shell or spines, and eats it.A sexual predator is a person seen as obtaining or trying to obtain sexual contact with another person in a metaphorically "predatory" or abusive manner. states have a special status for criminals designated as sexually violent predators, which allows these offenders to be held in prison after their sentence is complete if they are considered to be a risk to the public.Analogous to how a predator hunts down its prey, so the sexual predator is thought to "hunt" for his or her sex partners. They can also be placed on a sex offender list which is viewable by everyone on the Internet.Predators may actively search for prey or sit and wait for it.When prey is detected, the predator assesses whether to attack it.

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