below is an example of how nurturing plays a role in animal growth.
FIXED ACTION PLAN
Is a form of learning in which an organism decreases or ceases to respond to a stimulus after repeated presentations. Essentially, the organism learns to stop responding to a stimulus which is no longer biologically relevant. For example, organisms may habituate to repeated sudden loud noises when they learn these have no consequences. Habituation usually refers to a reduction in innate behaviours, rather than behaviours developed during conditioning in which the process is termed "extinction".
Sensitization is the opposite process to habituation, i.e. an increase in the elicited behavior from repeated presentation of a stimulus. There may also be an initial increase in response immediately prior to the decline, a sensitization process followed by a habituation process.
Another related phenomenon is stimulus generalization, when habituation occurs in response to other stimuli that are similar to the original stimulus. The opposing process, stimulus discrimination, is when habituation does not occur to other stimuli that are dissimilar to the original stimulus. A progressive decline of a behavior in a habituation procedure may also reflect nonspecific effects such as fatigue, which must be ruled out when the interest is in habituation as a learning process.
Is a range of voluntary, intrinsically motivated activities normally associated with recreational pleasure and enjoyment. Play is most commonly associated with children and their juvenile-level activities, but play can also be a useful adult activity, and occurs among other higher-functioning (non-human) animals as well.
like a taxis or tropism, is a movement or activity of a cell or an organism in response to a stimulus. However, unlike taxis, the response to the stimulus provided, as gas exposure, light intensity or ambient temperature is non-directional.
Kinesis is an animal's non-directional response to a stimulus, for example humidity. The animal does not move toward or away from the stimulus but moves at either a slow or fast rate depending on its "comfort zone." In this case a fast movement (non-random) means that the animal is searching for its comfort zone but a slow movement indicates that it has found it.