I am not sure about the species of gazelle, but here are a pair of East African black-backed jackals hunting a gazelle fawn:
One jackal harries the mother gazelle, allowing the second jackal to come in and kill the fawn.
This is clearly cooperative hunting. These animals are only about the size of a large terrier to a small beagle, so even when they work together, they are still limited in the size prey they can pursue.
We traditionally think of them as scavengers, but the truth is they are opportunists. They will mouse and rat, and they will work together to hunt larger prey, as they are doing here.
