Cliff Pickover on Twitter: "Killer guinea pig the size of a buffalo discovered. Bite as strong as a tiger. Source: http://t.co/sc6gKZ0Ola http://t.co/6c3U2AIT7C"
Giant human-sized RAT with huge incisors for gobbling prey terrorised swamps 10million years ago
Largest rat was as big as a buffalo - Times of India
When giant guinea pigs roamed the Earth
The Terrifying Guinea Pigs Of Ancient History - KnowledgeNuts
TIL that there was once a prehistoric species of guinea pig that was the size of a buffalo and had a bite that rivaled that of the modern tiger : todayilearned
50 Amazing Guinea Pig Facts You Need to Know - Guinea Pig Tube