The message om
from "Dave Liquorice" contains these words:

On Sun, 22 Feb 2004 11:14:03 +0100, martin wrote:

... the animal loses blood internally, and weakens and dies. There
is no pain involved.

How do you know?

Quite, the one that crawled out on to the study floor after taking an
anti coagulant poison was not very happy. Good hard whack with a very
firmly rolled up newspaper put it out of it's misery far quicker.

Serious internal bleeding in humans is certainly painful.

If bleeding is within a body cavity where the blood can't escape, yes.
But bleeding inside the intestinal tract has a way out. It can be
digested, voided, and so painless that people are completely unaware of
it.

Janet.