Board Thread:Lore Discussion/@comment-11345660-20130908095939/@comment-3539474-20130909214050

Banneram wrote: Too hit on the interbreeding, I will back it up with in game references.

"Certainly, there have been cases of intercourse between these "races," generally in the nature of rape or magickal seduction, but there have been no documented cases of pregnancy. Still the interfertility of these creatures and the civilized hominids has yet to be empirically established or refuted, likely due to the deep cultural differences."

- Racial Phylogeny

This tells us that there are anecdotal examples in the game universe, the stigma that would surround most beast relationships would keep most unions from coming to light.

Now for a reference from the savants in Morrowind, who brought us a lot of lore in game. "Offspring of inter-racial matings have the racial appearance of the mother, but may occasionally share inherited characteristics and abilities of the father. Sloads, dragons, and other sentient races cannot mate with Men, Elves, or Beastmen, and are not considered 'human.' Exceptional accounts of matings between men and daedra do not fit smoothly into this scheme."

- Savant's Notes on Vvardenfell

Beastmen in this statement are grouped together with the Men and Elves. They are not included in the exceptions to the rule.

I know this is a weird topic, yet it is one that crops up on the forum from time to time same as Mer lifespans. It is possible to  "mate" with any race, but as far as breeding with the beastmen it probably can't happen due to different anatomy & DNA. Unless you use magic which really can change everything, doubt egg-laying Argonians can breed with non-beast races though it might be possible for a Khajiit to do it.