1which is a cyclic behavior of movement from one environment to another? a migration b hibernation c imprinting d conditioning 2 an opossum is an animal that is known to "play dead” when threatened by other animals. this is an example of a response to which kind of stimulus? a the external stimulus of tiredness b the internal stimulus of illness c the external stimulus of danger d the internal stimulus of predators 3 which is an example of an instinct? a rabbit hides when it observes a predator. b dog wags its tail when it hears a doorbell ring. c boy pulls his hand away after touching a hot surface. d dolphin swims through a hoop during an amusement park show.