One of the most heartwarming areas of animal relationships involves interspecies bonds. Consider the famous case of Koko the gorilla and her kitten, "All Ball." Or the reality of sanctuary life where a fox and a dog become inseparable. In the wild, cleaner fish and large predators engage in a "mutualistic" relationship—the cleaner gets a meal, the predator gets a parasite removal. However, recent studies suggest this goes beyond economics. Predators actively refrain from eating the cleaner fish, demonstrating a form of trust and future planning.
Not all animal social topics are warm and fuzzy. To understand society, we must also understand its shadow. Animal groups are masters of enforcement. Zooseks animal