Does the fact that many non-human animals have pituitary disprove Cartesian Dualism?

[BrianSoddingBoru4]

The validity of Descartes dualism doesn’t depend on Descarte’s supposition about the role of the pituitary gland in dualism.    So contradicting the Descarte’s pituitary supposition does not actually contradict Descarte’s dualism hypothesis itself.

But it does make the anti-vegan claim "Only human beings have souls, other animals don't feel pain." look pretty baseless, doesn't it?

I think the best way to disprove the notion that animals don’t feel pain is to look at an animal in pain.

Boru