Here are some interesting video clips of animal instincts.  As you ponder these complexities, consider the impossibility of evolutionary mechanisms (random mutations and natural selection) to explain their existence.

The symmetrical design created by the Japanese puffer is an example of an instinctive behavior that defies evolutionary explanations.

This is an interesting overview on general concepts of animal instincts and of their necessity in all forms of life.  Notice that no references are made as to mechanisms of how much complex behaviors could evolve.

The instinctive behavior of the Australian lyrebird cannot be explained through evolution.

Richard Dawkins explains that instincts are acquired through a mechanism that has been proven to be impossible;  The hard-wiring of a genetic code through acquired behavior from parents.