Up your butt.
A planarian has a mouth located in the middle of the underside of their bodies. They don't have anuses.
through its anus located next to its mouth!
It is part of the digestive system. The digestive system goes from the mouth all the way to the anus.
The mouth of the crinoid is located right next to the mouth and their digestive system is u-shaped. This is perfect in a sessile existence because, if they attach themselves to a surface, both the mouth and anus will be able to function.
The anus of an octopus is behind its brain.
The anus for a jellyfish is its "mouth".
you can tell the difference between the mouth and anus because the mouth is darker then the anus and the mouth is a little bit larger than the anus
the mouth.
They have no anus and expel undigested matter through the mouth.
human mouth
Anus itself is,in a different view, the last ending of the digesting system that works as a valve to hold "dirt" from going out the inner part of the anus MUST be so dirty if you Wash it with a mild soap and water the anus will be clean.
The mouth is formed second, after the anus.