Well, if it’s a lizard woman then she already is a mixture of mammal (human) and lizard - why shouldn’t the secondary sexual characteristics be more on the human side?
Reptiles don’t have sexual dimorphism?
Woman isn’t a sex, it’s a gender. Reptiles don’t have gender.
Hey look, it’s the kid in art class.
No, I love lizard tiddies
What I wanted to say was: if it’s a lizard that shows human traits (speech, walking upright, tool use, human intelligence) why is it bad to add more human/mammal traits like breasts?
It’s not bad, but I’ve seen it put this way:
It’s quite easy to believe a species of reptile could conceivably end up standing upright and having a similar body shape to us, as there’s nothing in the defining features of a reptile that are broken by that concept
But mammary glands (tiddies) are quite literally what makes a mammal a mammal, giving it to a reptile is going to raise a question to those aware of these definitions