832-398577 - Hippos (Hippopotamus amphibius) yawning, the animal opens its mouth upward at the sky. Black and white image. Hwange National Park, Zimbabwe, Africa
1174-10801 - A hippo, Hippopotamus amphibius, yawns while in the water, teeth visible, Londolozi Wildlife Reserve, Sabi Sands, Greater Kruger National Park, South Africa
1350-200 - Polar Bear (ursus maritimus) with relaxed yawn in Fireweed (Epilobium angustifolium) on sub-arctic flower covered island at Hubbart Point, Hudson Bay, near Churchill, Manitoba, Northern Canada..
1116-47594 - Female Brown bear (Ursus arctos) looking at camera with mouth open, captive in Alaska Wildlife Conservation Center, South-central Alaska, Portage, Alaska, United States of America
1174-8146 - The head of a cheetah, Acinonyx jubatus jubatus, as it yawns, teeth and tongue showing, eyes closed, Londolozi Game Reserve, Sabi Sands, South Africa
1116-43930 - Female Cheetah (Acinonyx Jubatus) Rubs Against Tree Trunk And Yawns With Open Mouth While Young Cub Lies At Her Feet Near Ndutu, Ngorongoro Crater Conservation Area, Tanzania
1174-5221 - A leopard, Panthera pardus, lies on a boulder and yawns, mouth open showing teeth, head tilted back, long white whiskers, in black and white, Londolozi Game Reserve, Sabi Sands, Greater Kruger National Park, South Africa
860-286920 - Adult male Polar Bear (Ursus maritimus) yawns while resting on drifting pack ice near mouth of Wager Bay and Ukkusiksalik National Park, Nunavut Territory, Canada