When a frog shoots out its tongue to catch an insect it is reacting to a small moving object that it can not see well and must line it up precisely beforehand .
Insect shuts insect 's eyes as the tongue is extended .
When a frog shoots out its tongue to catch an insect it is reacting to a small moving object that it can not see well and must line it up precisely beforehand because it shuts its eyes as the tongue is extended .