Given that axolotls possess the ability to regenerate limbs and even parts of their brain, what does this ability say about the nature of identity and the relationship between the body and selfhood?

I’m not sure I understand the question.

Basically, an axolotls sense of self is not attached to its body like it is for us. What does that mean for us and our sense of self? Is it all made up? Does our body really have anything to do with our identity?

I use my glasses as a way to express myself, for example. But that is all made up isn’t it?

People have also undergone massive personality changes after sustaining brain damage or strokes. The “self” is purely an emergent property of the hardware it runs on.

Is this like the chariot metaphor in Plato’s Phaedrus? In other words, if the axolotl regrows enough of itself, when is it no longer the same being?

No, I have never heard of that metaphor

Personally, I doubt that an oxolotl has a sense of self. How would regeneration teach us to be more grateful?

Because we cannot regen so we need to be grateful of our limbs

Sorry, I still am not understanding the question. An axolotis is a type of salamander.