Spotted hyenas are the animals that got Sarah Benson-Amram thinking about how smart carnivores are and in what ways. Dr. Benson-Amram, a researcher at the University of Wyoming in Laramie, did research for her dissertation on hyenas in the wild under Kay E. Holekamp of Michigan State University. Hyenas have very complicated social structures and they require intelligence to function in their clans
![Some Carnivores Are Better Than Others at Unlocking Dinner (Published 2016)](https://cdn-ak-scissors.b.st-hatena.com/image/square/60e46734ff8932a2717cf2925c9af30ce868d82f/height=288;version=1;width=512/https%3A%2F%2Fstatic01.nyt.com%2Fimages%2F2016%2F01%2F22%2Fmultimedia%2Fscience-take-puzzles%2Fscience-take-puzzles-facebookJumbo.jpg%3Fyear%3D2016%26h%3D550%26w%3D1050%26s%3Dfb3ada17780f97ed2a5e125705c64b1ead40d2552056c3330dd2498fc02f7e27%26k%3DZQJBKqZ0VN)