Yes, a rabbit can build a nest without being pregnant. Usually false pregnancies cause this, where the doe believes she is pregnant and the body goes through the motions of pregnancy (i.e. eats more, builds a nest, can become aggressive, etc.).
You may also notice a very crude version of a nest by either bucks or does during a heavy molt. If the rabbit sleeps in one spot and already has a "bed" made, while the fur is being molted out it can get caught within the bed and look like a very crude nest. *Note: This is not actually a rabbit making a nest, but can be mistaken as such*
you go to the pet shop, steal a male rabbit, make them reproduce and taa daa you go to the pet shop, steal a male rabbit, make them reproduce and taa daa
breed it with a boy rabbit
It will make the kittens deformed
No, being pregnant does not make one an adult.
You would know because they make a nest.
give it food and sheleter and make sure it has water
Yes but is's highly dangerous for the rabbit, it will lose about 4 years of its life and the babies might be deformed.. ):
No.
being fat
No. Being pregnant/having a child does not emancipate a minor, which means Mom and Dad still make the decisions.
Yes, being pregnant doesn't make you immune from punishments.
Yes, rabbits tend to produce more droppings when pregnant due to increased food intake. This is a natural part of their digestive process and helps to keep their digestive system healthy. Make sure your pregnant bunny has access to plenty of hay, fresh water, and a balanced diet to support her during this time.