I'll counter your question with two more: 1) Is this really the right place to be posting this question? 2) Are you providing enough background information in your question?
The outlier is 9.
no
Rabbits can be taught, re-taught to use a litter box, rabbits normally use one corner of their hutch/cage to poo in, if you get a litter box, and put some saw dust ectra in it, then get plenty of the rabbits poo and put it in the litter tray in the corner that the rabbit poos in, the rabbit should start to use the litter box and after a few weeks of the rabbit using the tray you should be able to move the litter tray to where you want and the rabbit will continue to use it.
50
no your rabbit that hade the litter before the ones your having now will not hurt the new litter because they are family as well they won't hurt each other. but when your mother rabbit has the new litter just try to put it somewhere else just in case that is what i did
It's bored and/or does not like the location of litter pan.
Rabbits usually use the same corner to go to the bathroom. You should first observe which corner this is. Then put a litter material (newspaper, small animal litter, non-clumping kitty litter, or something similar) in the litterbox. Using fancy litters with chlorophyll crystals etc. may encourage the rabbit to eat the litter, so you should avoid those types of litter. Each time the rabbit goes in the box, you should give it a small treat (a very small piece of fruit or vegetable). This will teach the rabbit that going to the bathroom in the litter box is a good thing. You should also be sure to keep the litterbox emptied, or the rabbit will not want to go in it anymore. Eventually, the rabbit will learn that the litterbox is its friend. Some rabbits will learn it quickly; others never will. The key is to stay diligent in cleaning the litterbox and rewarding the rabbit.
Really, they can have as many as 1-14 babies in a litter. Normally they have about 6, though.
yes it do some times
Around 4
The rabbit may have a runt in the second batch, but just as well may not. It depends on many factors including the buck, and how many kits are in the litter. One cannot say that she would or would not have a runt for sure.