What is an example of a stimulus and a response that humans exhibit? Can a similar behavior be seen in any other organisms?

Common examples of this would be if you place your hand in extremely warm or cold water, and an immediate response of pulling out of the water or any fluid, is an example of this extreme response, other responses are what is done in everyday, like being thirsty or hungry etc.

These behaviours are shared by all organisms even the most simple ones.