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In amphibians there are salvary glands on the tongue, which in frogs produce what is called a two-phase viscoelastic fluid. When exposed to pressure, like when the tongue is wrapping around a prey, it becomes runny and covers the prey's body. As the pressure drops, it returns to a thick and elastic state, which gives the tongue an extra grip. [75]
The amphibian bladder is usually highly distensible and among some land-dwelling species of frogs and salamanders may account for between 20% and 50% of their total body weight. [82] Urine flows from the kidneys through the ureters into the bladder and is periodically released from the bladder to the cloaca.
Amphibian: American bullfrog Lithobates catesbeiana: 2005 [1] [2] Animal: Missouri mule: 1995 [1] [3] Aquatic animal: Paddlefish ... List of Missouri state symbols.
North of the Missouri River, the state is primarily rolling hills of the Great Plains, whereas south of the Missouri River, the state is dominated by the oak-hickory Central U.S. hardwood forest. Some of the native species found in Missouri are included below. [1] [2]
Missouri State University (MSU or MO State), formerly Southwest Missouri State University, is a public university in Springfield, Missouri, United States. Founded in 1905 as the Fourth District Normal School , it is the state's second-largest university by enrollment, with an enrollment of 23,418 in the fall semester of 2023. [ 5 ]
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Most of these frogs are caught in the wild, but some are raised in captivity. The United States is a net importer of frog legs. [68] The American bullfrog is used as a specimen for dissection in many biology and anatomy classes in schools across the world. [69] It is the state amphibian of Missouri, Ohio, and Oklahoma. [70]
From the African tree frog to the tiger salamander, there are thousands of species of amphibians that can be found scattered all over the world. Amazing Amphibians: A 5-Day Unit Plan for Kids Skip ...