Well, it's the same as ours. To stay alive... don't you think?
The likely word is "physiologist" (deals with bodily functions of humans or animals).
Bodily Functions was created in 1997.
Of course they do, all animals on this planet have a brain or some form of central nervous system that is responsible for all bodily functions.
To get energy for bodily functions.
Toxin
Humans, and some animals, wear diapers, because they can not control their bodily functions, and to prevent urine and feces from being dumped everywhere they go.
hair growth
it is a part of your body
yes
All except Burping
No. All bodily functions cease.
all the above apex