Deep Throat
Hippopotamus Hippopotamus amphibius
Images of “yawning” hippos are fairly common — but I particularly like the “sparkle” in this afternoon image of this wonderful creature. The “yawn” is, in fact, not a yawn at all, but a threat display and passive defence mechanism.
This image was captured on the Chobe River, near Kasane, Northern Botswana, Southern Africa.
Duncan's Nature Photography 