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A digitigrade animal is one that stands or walks with its toes (phalanges) on the ground, and the rest of its foot lifted. Digitigrades include birds (what many see as bird's knees are actually ankles), cats, dogs, and many other mammals, but not plantigrades (such as humans) or unguligrades (such as horses). Digitigrades generally move more ...
Ornithomimids were long-legged, bipedal, ostrich-like dinosaurs with toothless beaks. The type species , Struthiomimus altus , is one of the more common, smaller dinosaurs found in Dinosaur Provincial Park ; their overall abundance—in addition to their toothless beak—suggests that these animals were mainly herbivorous or (more likely ...
Ostriches have only two toes, with one being much larger than the other. Cassowaries have developed long inner toenails, used defensively. Ostriches and rheas have prominent wings; although they do not use them to fly, they do use them in courtship and predator distraction. [39] Without exception, ratite chicks are capable of swimming and even ...
Struthioniformes is an order of birds with only a single extant family, Struthionidae, containing the ostriches.Several other extinct families are known, spanning across the Northern Hemisphere, from the Early Eocene to the early Pliocene, including a variety of flightless forms like the Paleotidae, Geranoididae, Eogruidae and Ergilornithidae, the latter two thought to be closely related to ...
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Common ostrich male and females in Etosha National Park, Namibia. Order: Struthioniformes Family: Struthionidae. The ostriches are flightless birds native to Africa. They are the largest living species of bird and are distinctive in appearance, with a long neck and legs and the ability to run at high speeds. Common ostrich, Struthio camelus
Dogs have ear mobility that allows them to rapidly pinpoint the exact location of a sound. Eighteen or more muscles can tilt, rotate, raise, or lower a dog's ear. A dog can identify a sound's location much faster than a human can, as well as hear sounds at four times the distance. [41] Dogs can lose their hearing from age or an ear infection. [42]