We're All Ears For Rabbit Vibrators!
Rabbit vibrators get their name from the additional clit arousing appendage on the side of these vibrators. Originally the bit that was designed to stimulate the clitoris had a rabbit ears shape about it so that it made good contact with the clit. Meanwhile the rest of the vibrator was inserted as with other vibrating sex toys.
The rabbit vibrators were designed purely with women in mind. Since most women enjoy getting their clitoris rubbed while they are being penetrated the rabbit vibrator is the perfect solution. So c'mon girls, get the sex toy that's made especially for you!
Since the original rabbit vibrators were released there have been a number of evolved designs that include dolphin shaped stimulators where orginally the rabbit ears would have been. Either way they are all generally referred to as rabbit vibrators.
Some of the high end rabbit vibes such as the iVibe rabbit vibrators have a clitoral stimulator that moves independant of the main vibrator.