WOW, am I ever sick of seeing these comments. Look at other vertebrate species such as angler fish or spotted hyenas, the latter being mammals. Are Exodrakes really much of a stretch from them? (I actually based their sexual dimorphism off of spotted hyenas, just more extreme). Consider the REASON why human females have wider hips. It's because they are physically smaller than males, but have to give birth to a rather large baby somehow. The female Exodrakes are so much larger than the males, they don't need wider hip bones because the whelpling they give birth to is small enough to pass through anyway (ergo, giving birth for them is a HELL of a lot easier than it is for humans. That's why they don't have "curvy" hips. They do have a larger hole in their pelvis, though; an evolutionary remnant from a time when their sexual dimorphism was less extreme.

And...why the fuck would I even do that. I absolutely hate aliens that look like human women because they are so unrealistic. The males ARE already more like human females in a sense, since they are physically smaller than the females, their main sex hormone is estrogen, they are homogametic (having XX chromosomes, not ZZ chromosomes like in birds; the females have the Y chromosome. In Hrothgarian dragon species, the larger sex is always the heterogametic sex, and that sex can either be male or female depending on the species. Usually, the female is the larger sex, the exceptions being draconic marsupials, because the females do not need a large body to carry nearly fetal offspring. And yes, they have pouches), and they have functioning, lactating mammary glands in their dils (the tentacle-like sense organs on their head which are covered in protofeathers and create the illusion of hair). Females have no mammary glands at all.

Also, they aren't even mammals. They're dragons. Their class is Draco, not Mammalia. They have definitive features of birds, mammals, serpents, and even insects, and all members of the class Draco breathe fire via chemical reactions in specialized salivary glands that have evolved into fire-producing organs. The only reasons they aren't classified as Aves is because they give birth to live young (placental viviparity, and a far more advanced and specialized form than what mammals on Earth practice) and are hexapods. They also have hollow, venomous fangs that fold down in their mouths when they are closed (the reason why their very long fangs don't protrude through their lips), a forked tongue, and a Jacobson's organ, like a snake. The Jacobson's organ compensates for the olfaction ability lost when they evolved flatter faces to improve their vision and make their jaws more efficient, thus also allowing their braincases to expand further. Humans have flat, round skulls for a reason, and the same reason they do. Yes, their jaws are weak for dragons, but they are strong enough to pierce relatively tough skin with their fangs to inject venom. Oh yeah, the males' venom is more deadly and concentrated than the females', and both sexes are immune to both venom types.

So yeah. Wall of text aside, it helps to do research on these things before trying to preach about them