Genetics.
There are many rabbits with ears sticking up. My Netherland dwarf rabbit, which is the smallest rabbit, has upright ears. Also dutch rabbits and rex rabbits do, to name some. Hope this is of some help :)
No. There are breeds who have floppy ears.
yes.
no they do not. hares are slightly bigger and flatten their ears while running to maintain speed while rabbits keep their ears up
no rabbits ears are very sensitive and they use them very readily for hearing and picking them up by the ears can harm their hearing
It's probably caused by mites. Your rabbit will attempt to scratch the itchy mites off and end up hurting her ears. Take her to the vet for some medicine.
When they are calm, or sleeping a rabbit will lay the ears down. At this time they don't want to here. I f startled the ears go up to here. Some rabbits, (flopped eared) are born with long ears that hang down. This is because of the breed.
If you mean the rabbits Lop Ear, I am not sure where they come from, but I do know why they are called Lop Ear Rabbits. This is because of their ears falling over the sides of them. In my opinion Lop Ear Rabbits are the cutest breed of rabbits.
No, a common misconception. Look up a picture of an "enlgish lop" sometime. Very very long ears (22 inch span). This breed in particular originated in Africa. The ears on any rabbit are to release heat. They are like a built in AC. With so much surface area, the heat given off allows long eared breeds to survive in hotter climates better. Dwarf rabbits, who's ears are the smallest, are that way to conserve heat. With less surface area the ears don't give off as much heat and allow the rabbit to survive better in colder climates.
To pick up all the sounds to see if there is any danger.
it pushes its squid arm things up and doun like a jellyfish
Lop rabbits will have long ears that fall over the sides of their head, as opposed to standing straight up.