Allegra and Itching - from FDA reports. Summary. Itching is found among people who take Allegra, especially for people who are female, 60+ old , have been taking the drug for < 1 month, also take medication Singulair, and have Hypersensitivity. This review analyzes which people have Itching with Allegra.
Rattlesnake Biology. Rattlesnake Biology. Rattlesnakes are usually identified by their warning rattle (a hiss or buzz) made by the rattles at the tip of their tails. A rattlesnake is born with a button, or rattler, and acquires a new rattle section each time it molts. Rattlesnakes also are distinguished by having rather flattened, triangular heads.
According to a study by Mathew P. Rowe, et al., published in Biology of the Vipers, the rattle may be the most extensively studied anatomical feature among snakes. It's not only rattlesnakes that shake their tail, though; many pit vipers and a number of harmless colubrid snakes engage in the behavior as well.hen the apparatus is shaken at high speed, a buzz or rattling sound is created; rattlesnakes have three sets of dedicated, tail-shaking muscles in their tail. Two of the muscle groups pull the tail to each side, and a third set of muscles allows the ventral surface to be aimed in either direction.