Again,

the liver is attached to the great vein, but it has no
communication with the aorta; for the vein that goes off from the
great vein goes right through the liver, at a point where are the
so-called 'portals' of the liver. The spleen also is connected only
with the great vein, for a vein extends to the spleen off from it.

After these organs come the 'kidneys', and these are placed close
to the backbone, and resemble in character the same organ in kine.
In all animals that are provided with this organ, the right kidney
is situated higher up than the other. It has also less fatty substance