Board Thread:Lore Discussion/@comment-71.61.178.23-20130623221624/@comment-5372149-20130716145951

Ok so, what we know about the Lilmothiit is that they were a nomadic tribe of vulpine looking Beastfolk, who lived in Black Marsh. Very little evidence of there existence remains.

What we know about the Argonians (their closest Neighbors) is that they believe they were created by the Hist and that the Khahaten Flu didn't affect anyone of "reptilian stock"

What we can deduce from this is:
 * That they were canine, the Khajiit being feline makes it very unlikely that these 2 races are related in anyway.
 * Being from Black Marsh they were probably killed of by the Khahaten Flu, if they were around for it at that time.
 * Being Nomadic in nature they could have just left Tamriel
 * if they were destroyed before the Khahaten Flu, the Hist may have had something to do with there demise(total speculation)

Apart from this, we cannot really speculate much more without more evidence