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

[FlatAssembler]

If I back up and accidentally step on one of my dogs paws, they sure react like they are in pain. They pull back, they yelp. Lucky for them I am pretty careful, especially when in the kitchen, and I don't weigh much.

Have you ever seen a dog or cat with a broken limb? You don't think they feel pain?

Do you suppose there's a reason why a veterinarian uses an anesthetic before cutting into a dog for a reason other than to keep it still?

I have helped dad spay and neuter animals. Even when knocked out, when the ovaries or testes are handled to be cut free...the animals still moan.

No, I am not claiming that dogs and cats don't feel pain, I am being critical of that claim. Descartes famously argued that no animal except human beings feel pain. In my opinion, that suggestion was ridiculous back then, and it's even more ridiculous now.

Whether animals with much simpler brains than cats and dogs, such as fishes or insects, can feel pain is another question entirely.