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.
For other uses, see Rattlesnake (disambiguation) and Rattler (disambiguation). Rattlesnakes are a group of venomous snakes of the genera Crotalus and Sistrurus of the subfamily Crotalinae (the pit vipers). The 36 known species of rattlesnakes have between 65 and 70 subspecies, all native to the America, ranging from southern Alberta and southern British Columbia in Canada to central Argentina. Rattlesnakes are predators that live in a wide array of habitats, hunting small animals such as birds and rodents.