Here are some important guidelines in regards to the proper care and feeding of your host, and the dangers that accompany employing this particular mode of infiltration.
It is important that you follow these guidelines if you intend on occupying a host for any extended period of time. The single most important fact you need to know is that your host must eat.
Please study your host before you occupy it, in order to learn what its normal eating habits and feeding rituals are. Having your host die will reveal you to all. They must eat in order to maintain their regular body functions.
The most easily attainable and controllable host creatures do not have the capacity to speak. Please do not speak aloud while in these forms, or you will come under scrutiny by the more intelligent creatures. It is suggested that you study the host's vocal patterns and try to emulate them.
It is suggested that you study the host's vocal patterns and try to emulate them. Do not remain in the host body for an extended period of time. The base nature of these creatures is very alluring, and their base nature can eventually take precedence over your tasks.
Do not lose yourself to their animal nature, you are here for a purpose.