My does is due on tuesday and it will be my first experience breeding so I havent seen that kind of behaviour before but i'll be interested to see if anyone else has.
My doe is very territorial, I wonder if the doe mounting the buck is a dominance thing like with female dogs humping?
With the other doe, is it her first litter? I think first timers are more prone to psudopregnancy (sp?)? Maybe this is an extreme case.