Gazelles have a mutualistic symbiotic relationship with ostriches, where both parties benefit by enhancing their ability to detect predators and alert one another to any oncoming danger. As a result, gazelles form loose interspecific groups with ostriches, particularly when they are feeding, at times where both parties are most vulnerable to being attacked by predators. Both parties have different developed sensory organs.
Gazelles have extremely acute hearing that allows them to easily determine whether there are any predators nearby, based solely on the sounds in their environment. On the other hand, ostriches also have a very acute sense of smell, and also have a height that allows them to see further than gazelles. By working together, the chances of early predator detection is greatly increased, as these animals are able to warn one another and flee before predators are even able to get close to them.
Ostriches also have keener eyesight in comparison to gazelles. Their eyes are approximately 5 centimeters in diameter, allowing them to take in more stimuli and be more sensitive to minute changes in their environment.
Ostriches have powerful legs with a stride around 2.2 to 2.8 meters that allow them to easily escape from predators. They can reach speeds of up to 80 miles per hour. Gazelles, on the other hand, have powerful horns, and their strength in numbers can also be quite intimidating to predators.