Which class of animals feel pain?

Question

Have scientists figured out what kind of animals feel the pain? [not just stimulus]

for e.g does a plant, ant, chicken, fish, cockroach feel pain?

Answer 1

I think all organisms in the kingdom Animalia feel pain to a certain extent. Their nervous systems vary from phylum to phylum and from class to class. They probably feel pain in different ways than we do.
Plants havent ever "shown" their pain, that is because it is very hard to see the expression of a plant, and also they havent been shown to have a nervous system. They do however have detection systems, like when flowers are turned toward the sun, there is somethign there sensing the outside world, but we just cant determine whether or not they can feel pain.

Answer 2

An ant & cockroach are insects
A plant is a plant

And yes all animals fel pain.

Humans are the only animals that tear up when we hurt from pain

Answer 3

regardless of the stupid "Science" factor I believe every living thing, and creature feel some sort of pain. It may be different to plants compared to humans and animals but pain is a deep subject. Pain can be emotional, physical etc. Everything has a different area of pain. If the plant wilts and begins to die it feels itself wilting and slowly dying, is that not some form of pain? -Think outside the box people. Appreciate Life more.

Answer 4

The living class and a plant is not an animal... an ant and a cockroach are insects they are not animals either

Answer 5

Nervous system.

Some people who were born without a nervous system can't feel pain. If you disconnect the synapses between nerves and your brain, you can't feel pain. Plants have no brain or nerves, thus no nervous system which to feel pain with.

Everything else you listed has the possibility to feel pain at some level. Maybe smaller brain = less pain, but how would you really know for sure, and moreso why would you care to know?

Answer 6

All living creatures, regardless if plant or animal feels a form of "pain" and other emotions. Just becuae humans cant relate to other creatures, we classify it as stimulus, but you can see even insects show reasoning and fear.

Answer 7

I'd say all animals feel pain in one form or an other.

Answer 8

all of them, even a turtle can feel you drilling through its shell, even fish feel pain as their whole body is dragged up on a hook, even if the part the hook goes into maybe quite numb - why are you thnking of hurting any animals?

Answer 9

if there is a nervous system, you can feel pain.

But plants aren't animals

Answer 10

humans