Habituation has big benefits for animals. For example, it is a waste of precious energy to run off at the sight and sound of everything that moves. So, animals learn to respond to the things that really matter. If you put a worm in a dish and tap with your finger on the dish, the worm will initially react and thrash about but very soon will become still and used to it. Fatigue aside, if you keep repeating the tapping, the worm reacts less and less. This is habituation and it occurs throughout th