The killing of Zimbabwe's famous Cecil the Lion has caused uproar across the Internet over poaching — and that's great.

But hey, not all hunting is bad, and new research shows some animals actually end up directly benefiting quite a lot from the human activity.

A group of Spanish scientists from the Institute of Research in Game Resources published a study this week that shows scavengers throughout the world are getting quite a bit of grub from people's hunted remains. In Europe and the U.S. alone, the scientists estimated that ecosystems are "subsidized" with about 100 million tons of carrion from big game hunting every single year.

Here's the breakdown:

Interestingly, 19 percent of these scavengers are threatened species, including the the Spanish imperial eagle, the lynx, the leopard, several types of vultures, and the lion.

Birds scavenge the hunted leftovers twice more frequently than mammals, the study found, with about 40 percent of scavenging species belonging to the crow family. The wolf is the mammal that dominates the human-killed remains worldwide, except for in South Africa, where the hyena reigns.

Smaller mammals, like the red fox and the wild boar, were also big players in the study, appearing most frequently in areas with low presence of vultures and top predators.

To perform the study, researchers used motion-triggered remote cameras to monitor more than 350 carcasses from human hunting in Spain. They completed the data with similar information from scientific works in other regions of the world.

The researchers say the study is an important tool to preserve biodiversity in ecosystems, as scavengers are essential to accelerating the recycling of nutrients and to curbing diseases.

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