Khajiit "children" look like housecats - they become more humanoid with age (assuming they're of a humanoid phenotype, some like alfiq and senche are quadrupedal cats even as advlts)
Not true. Khajiits become as they are by the phases of the moon for the most part. The Housecats are just a certain variety that are supposedly just as smart as the other races. Care to prove me wrong? I am fairly sure though.
And I am right...
http://www.uesp.net/wiki/Lore:Khajiit#Sub-species_Notes
Alfiq"A quadrupedal form of Khajiit, the Alfiq is, in many respects, similar to a common housecat. Although diminutive in form, the Alfiq retain the keen intelligence of the Khajiiti, having the ability to understand the spoken word of others, although unable to respond. It is possible that they can cast spells; see Mixed Unit Tactics for more on this subject."
Argonians though I am kind of sure we will not see any children of. If so maybe like 3-4 or so tops. This is one case where I am not very sure at all though. Argos from Black marsh need to lick the sap of the Hist to progress to advlthood right? What happens to those who are 'cut off from the root' eg. live outside of the Hist's reach? There might be lore stating that Argos do not have children in the way we are thinking.