To stimulate the clitorus!
The plural form for rabbit ears is (one) rabbit's ears; or (two) rabbits' ears.
True
It's not true that rabbits with long ears have a longer lifespan than rabbits with short ears. Ear length has no bearing on a rabbit's lifespan.
It depends on its species and size. Tiny rabbits have tiny ears.
Rabbits have floppy ears because, a rabbit breeder a long time ago selected a rabbit with "deformed ears" ( lopped ears) and bred it with a staight eared rabbit. And they created lop eared rabbits.
Bunny ears serve many purposes. Bunny ears are used by the animal known as rabbits for hearing sounds. Humans use fake bunny ears for costume purposes.
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 :)
All rabbits have long ears...
No. There are breeds who have floppy ears.
Genetics.
Their ears have gotten longer to hear better.
of course silly! :)