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Frogs have a highly developed nervous system that consists of a brain, spinal cord and nerves. Many parts of frog brains correspond with those of humans. It consists of two olfactory lobes, two cerebral hemispheres, a pineal body, two optic lobes, a cerebellum and a medulla oblongata.
Up to two-thirds of the frog’s body can be frozen but it will still survive. With the arrival of the spring thaw, water re-enters the frog’s cells and their heart starts beating again.
Ribs do not encircle body. In anurans the ribs are fused to their vertebrae, except in the suborder Archaeobatrachia which still has free ribs. [7] Ability to elevate the eyes (with the levator bulbi muscle) Forced-pump respiratory mechanism, the primitive breathing system also found in labyrinthodont amphibians [8]
Dissection of a frog. Pain is an aversive sensation and feeling associated with actual, or potential, tissue damage. [1] It is widely accepted by a broad spectrum of scientists and philosophers that non-human animals can perceive pain, including pain in amphibians.
"Fewer than a dozen of the 6455 species of frogs in the world are known to have internal fertilization, and of these, all but the new species either deposit fertilized eggs or give birth to froglets."
The hairy frog is also notable in possessing retractable "claws", which it may project through the skin, apparently by intentionally breaking the bones of the toe. [5] These are not true claws, as they are made of bone, not keratin. In addition, there is a small bony nodule nestled in the tissue just beyond the frog's fingertip.
Photos show a similar rubber frog. Overall, its body is an orange-brown color. ... of its similarity to other known species of frog. So far, similar rubber frogs have been found in two mountainous ...
Wood frogs range from 51 to 70 mm (2.0 to 2.8 in) in length. Females are larger than males. [5] [6] Adult wood frogs are usually brown, tan, or rust-colored, and usually have a dark eye mask. [7] Individual frogs are capable of varying their color; Conant (1958) depicts one individual which was light brown and dark brown at different times.