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.
Rabbits constantly rotate their "sound collecting" ears to effectively listen for potential threats or predators in their environment. This allows them to pinpoint the direction of sounds and respond quickly to any danger. Their ears are very sensitive and can pick up even faint sounds, helping them stay alert and safe.
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.
Lop ears in rabbits are a genetic trait where the ear cartilage is floppier than normal, causing the ears to hang down. This trait is passed down through generations and is commonly bred intentionally in certain rabbit breeds for their unique appearance.
To pick up all the sounds to see if there is any danger.
When bunnies stick their ears up, it usually means they are alert and listening for potential threats or noises in their environment. It is a natural instinct for rabbits to use their ears to detect any approaching danger.