A global community of nature enthusiasts
photographing and learning about wildlife
The hippo's jaw is powered by a large masseter and a well developed digastric.The animal has a distinctive gape, which can reach 150°. Hippopotamus teeth sharpen themselves as they grind together. The lower canines and lower incisors are enlarged, especially in males, and grow continuously. The incisors can reach 40 cm (16 in) while the canines reach up to 50 cm (20 in).