Gazelles typically hang around in groups of many gazelle, I can't say how many because I think it is largely variable. They can also be found near other animals like zebra, in order to increase the size of the overall group which acts as a deterrent to predators. read more
The way gazelles protect themselves are not with their horns, but with their legs. I'm trying to say here, is that they run away from their predators as fast as they can.They also leap to go farther distance. read more