Of COURSE the body can feel pain while under general anesthesia! Go ask an anesthestologist about how the blood pressure and heart rate reacts during surgery. It is quite apparent when the person (or cat) is in pain. It's even important to TREAT surgical pain during surgery, to avoid complications from the increased heart rate and raised blood pressure.
To the OP: obviously, you've gotten some good advice about declawing. I hope that you've been able to take this info to heart.
To the OP: obviously, you've gotten some good advice about declawing. I hope that you've been able to take this info to heart.