Suckling is when they breast feed . Mammals are the only animals that can breast feed. This adaptation is needed for the new born to survive. If a mammal does not have this adaptation they will not survive. Suckling is a good thing , the mother takes care of the new born when suckling.
Taxes moving toward or away from a stimulus. Is the movement of an organism in response to a stimulus such as light or the presence of food. If the organisms moves towards the stimulus, the taxis is positive, while if it moves away, then the taxis is negative. Movement of a cell or organism in a particular direction in response to an external stimulus.