How do cheetahs interact?
Cheetahs communicate vocally through hissing, growling and purring, but their throats are designed differently than lions making it impossible for them to roar. 
Female Cheetahs are solitary animals except when rearing a litter. Mothers with cubs will usually stay with in close proximity of one another. Females only come in contact with other Cheetahs in order to mate. Males on the other hand will sometimes form coalitions of 2-3 in order to defend more land. These coalitions are mostly formed between brothers, but sometimes include outsiders. 
What animals do cheetahs interact with?
Other prey animals include the bat-eared fox, bushbuck, kudu, hartebeest, nyala,oribi, roan antelope, steenbok, sable antelope, and waterbuck; they prey less frequently on African buffalo, gemsbok, giraffe, ostrich, warthog, wildebeest, and zebra.
Cheetahs communicate in many different ways. Some of these are through vocalizations such as purrs, bleats, barks, growls, hisses, and a high pitched chirping sound. Another way to communicate is through marking. A Cheetah will mark their territory by urinating or by cheek and chin rubbing. Saliva that is secreted contains the same chemical information about the animals, as does the urine. Cheetahs will mark territory so that they can better avoid one another.