Hippo that killed antelope at John Ball Zoo had no history of aggression, former zoo says - mlive.com
Hippo dies in agony after swallowing TENNIS ball thrown into enclosure he mistook for an apple - World News - Mirror Online
Video Hippo has a blast playing with a ball at Denver Zoo - ABC News
HIPPO BALL! open this photo, then look below for the whole… | Flickr
😅Funny Hippo video| Giant balls giant Hippo 😆 - YouTube
John Ball Zoo welcomes sweet and sassy 432-pound hippo, Penelope | WWMT
Hippo Splashes Around At Denver Zoo - YouTube
New pygmy hippos exhibit planned for John Ball Zoo - mlive.com
Denver Zoo hippo plays with a big ball
Hippo Balls and Dancing Surgeons | William The Coroner's Forensic Files
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USDA report released details pygmy hippo killing antelope at JBZ | wzzm13.com
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Hippo + Ball. Who knew something so simple would be so much fun for Ginger. Enjoy! #BRZoo #PygmyHippo #Enrichment | By BREC's Baton Rouge Zoo | Facebook
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African Hippo balancing on a blue ball. Stock Photo | Adobe Stock
Hippo Testicles Are So Mobile They Make Castration Tricky | HuffPost Impact
