[quote=@Aqutanama]
I really doubt the Thalmor would want to taint their pricks with other races. Raping would be below them. In their mindset. They wouldn't want to give another unworthy race their parts because they are A. Supreme race. and B. All other races aren't. perhaps I am wrong. >.>
[/quote]

On the other hand, they were said to have committed a vague number of atrocities when they sacked the Imperial City in the Great War, but that doesn't count as hard evidence.

Besides, they can just kill the people they raped in order not to sire any more Bretons.