Peaceful interactions rarely occur between a predator and prey. But the amazing image above of a group of gelada monkeys hanging around as some seemingly ‘tamed’ wild wolves just up and walk through their group seems to indicate that sometimes, peace is possible.
The magical discovery has researchers rethinking how these two ‘enemy’ species work together in the wild.
Other carnivores on Ethiopia’s Guassa Plateau, feral dogs and servals mostly, hunt the gelada monkeys and it would seem that the wolves would be a natural predator as well. But instead researchers observed for years the two species happily intermixing for years.
The researchers even think this peaceful interaction could be similar to how dogs were first domesticated by humans. “The gelada case is comparable to what early domestication of dogs might have been like,” study researcher Claudio Sillero, of the University of Oxford, told New Scientist’s Bob Holmes.
From their observations, they think the mutual friendship helps the wolves hunt, by making rodents easier to spot and catch.
They reported the incident in the Journal of Mammalogy
An uncommon friendship
High up on the grassy Guassa Plateau, with elevations ranging between 10,000 and 12,000 feet above sea level, gelada monkeys travel in herds up to 700 members strong. With long fangs, and wild manes of hair the gelada monkeys appear pretty vicious for an herbivore that likes to eat flowers and seeds. But regardless of their mean appearance their main predators, servals and feral dogs, still hunt them. But wolves interact with these monkeys differently.
According to New Scientist:
“You can have a wolf and a gelada within a metre or two of each other and virtually ignoring each other for up to 2 hours at a time,” says [study researche Vivek] Venkataraman. In contrast, the geladas flee immediately to cliffs for safety when they spot feral dogs, which approach aggressively and often prey on them.
When the wolves enter the gelada monkey herd, they alter their behaviour to show the monkeys they aren’t aggressive. Normally wolves run in a zig zag pattern or make rapid movements when searching for rodents. But when around monkeys they slow down to a more sedate stalk even when hunting.
And even more surprisingly, the wolves in the study avoid the temptation of the easily-available baby geladas while they walk through the monkeys.
There’s always exceptions to the rule, of course, and during their observation period the researchers did observe one altercation: One of the wolves tried to attack a baby monkey. The adult geladas quickly mobbed that wolf which dropped the baby monkey unharmed and ran off.
Primates have been observed to form associations with other animals and sometimes even with predatory animals, but, as the authors write, these relationships are rare and often fleeting. In contrast, the gelada’s relationship with the wolves is pretty stable — the researchers observed it over the course of years — and it doesn’t appear to be ending anytime soon.
Why work together?
Other than engaging in fewer fights, were there other benefits to these co-habitating creatures? The researchers found that when these two species intermingle, the wolves can snatch up rodents about 40% more often than when hunting away from the monkeys.
Why? The researchers have two theories: either the geladas disturb the rodents and cause them to leave their underground homes, making them easier targets for the wolves, or the rodents can’t distinguish between the two similarly sized and coloured animals, and so don’t run away from the wolves.
While the wolves earn easier meals from associating with monkeys, other than the lack of predation on the young geladas, the monkeys don’t seem to benefit from having the wolves around. They don’t scare away other predators that prey on geladas — the researchers saw feral dogs kill numerous monkeys during the study.
Historically wolves also tagged along behind another species: humans. Thousands of years ago researchers believe that wolves scavenged along the outskirts of human settlements or groups. While the humans probably killed aggressive wolves, the non aggressive wolves were tolerated and eventually domesticated after people found value in them as hunters and possible companions.
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