 Dear students, in this topic we shall discuss the inborn innate or instinctive behaviors. The innate or inborn behaviors are developmentally fixed complex behaviors which are exhibited by most members of a species. They are built in part of the nervous system at the time of birth of the animal. However, some behaviors which are instinctive develop at an appropriate stage in maturation. These behaviors are also called instinctive behaviors, which are complex and different from reflexes. Reflexes are simple responses of an organism to a specific stimulus. Instinctive behaviors are not reflexes. The instinctive or innate behaviors are closely controlled by genes. That is, they have a genetic basis that is not a very little influenced by environment and experience. The instinctive responses are determined by neural programs. These neural programs are encoded by hydratry material and contain information for the anatomical and physiological organization of the nervous system. Dear students, there is no need to learn or practice instinctive behaviors. They are performed in a reasonably complete form so that if such responses of an animal are given for the first time in their life and it is given for the first time in their life, then their response will be exactly the same in-born pattern, which will give a similar response. These types of responses can be modified through experience but only to a very little and limited extent. Dear students, let us take a few examples of innate behaviors. The succulent behavior of a human newborn is an innate behavior. And just after their hatching, they automatically move from the beach to the ocean. This is an innate and inborn behavior. This is also an innate behavior. In addition, animals' fighting behaviors, courtship behaviors or nest-building behaviors are also instinctive behaviors. In addition, in order to survive with a threat, internal escape functions are also inborn. Dear students, the innate behaviors are usually involved in basic life functions which are important in survival. Their role varies from species to species and such behaviors are especially important for those animals which have short life spans and have poorly developed central nervous system. Dear students, the animals with more complex nervous systems show little or less instinctive behaviors and the instinctive behaviors play lesser role in them. Because they rely more on social learning due to their highly developed cerebral cortex.