The Hippo (short for Hippopotamus Defense) is a setup that can be used

Chess Openings: Learn to Play the Hippopotamus Defense

Watch a Hippo Chase Boat of Tourists

The Third Edition of an already Classical Chess book! The Hippo is an Ultraflexible System based on a Characteristic double Fianchetto development

The HIPPO System: A Universal Chess Opening for White & Black

Hippos are really bad at chewing their food

Hippopotamus linked to Escobar killed on Colombian highway

Deadliest animal in the world is mosquitos, not hippos

Who are these hippos - India set to be new home of Pablo Escobar's hippos

Since hippos spend a large amount of their lives in water, could they theoretically grow larger than rhinos, since hippos don't need to support their weight on land as often? - Quora

Hippos Recognized as People in American Court: It's a First for Animals!

Introducing Augustus - Baby Hippo Born at Disney's Animal Kingdom is a Boy!

Pablo Escobar's Hippos: Ecosystem Restorers and Plaintiffs

The Hippopotamus Defence