I have a few of different shapes and I do not observe them but the past year I saw that one has changed (kind of mutated) and a few others have popped on my back. I never was afraid about that and except for two or three of them (including the "mutated" 1 because that 1 is right under my right arm - it sucked when i was shaving) I actually do not care about it, I for sure would be saying the opposite if I would have more and it would be in other parts of my body like on my face (i actually have 1 there but its completely flat so its not ugly looking - it may not even be a mole - while im thinking about it i may have more skin tags than moles
).
