Gizzard, a digestive organ of birds and certain other animals, such as earthworms, grasshoppers, and crayfish. A bird's gizzard has a thick, muscular wall and often contains gravel eaten by the bird. The food first passes to the crop, or gullet pouch, where it is moistened, then to the proventriculus, or glandular stomach, where it is mixed with mucus and digestive juices. Preparation for digestion is completed in the gizzard, where the food mass is ground by the action of the muscular walls and gravel. In smaller animals, the food usually passes directly from crop to gizzard.The gizzard is a muscular organ of the digestive system of birds and other animals.
If you've ever placed catnip near a cat, you will notice that the plant causes the cat to react in an extremely unusual way. It will roll around and kick its legs. What is it in catnip that causes cats to have this reaction? Find out in this article.
Dik-Dik is a slender dwarf antelope found in the dry bushlands of East Africa. It stands about 14 inches (36 cm) high at the shoulder and weighs 6 to 7 pounds (2.7 to 3.2 kg).