Do you know some animals that have horns? How many horns do they have? Most horns are hard and strong. Some animals use their horns to stop other animals from fighting with them. Which ones can fight with their horns? Non-Fiction Reading Level 2/F&P Level B
Since the extinction of the dinosaurs, hoofed mammals have been the planet's dominant herbivores. Native to all continents except Australia and Antarctica, recent paleontological and biological discoveries have deepened understanding of their evolution. This text reveals their evolutionary history.
Emlen takes us outside the lab and deep into the forests and jungles where he's been studying animal weapons in nature for years, to explain the processes behind the most intriguing and curious examples of extreme animal weapons. As singular and strange as some of the weapons we encounter on these pages are, we learn that similar factors set their evolution in motion. Emlen uses these patterns to draw parallels to the way we humans develop and employ our own weapons, and have since battle began.
Since the first drawings left on walls of ancient caves, human beings have been fascinated with that unique phenomenon of the animal kingdom, the presence of horns and antlers. From the mythical ''unicorn'' exercising the power over life and death to the perceived aphrodisiacal and other medical properties of rhinoceros horns and growing antlers, these conspicuous protuberances have had a significant place in the history of mankind. Part of that ancient interest in antlers and horns was due to their value as sym bols of masculinity; this interest persists today in trophy hunting, an honorable tradition carried on for centuries in many countries of the world. This book, which deals with evolution, morphology, physiology, and behavior, has not been devised as a comprehensive review of the subject of horns, prong horns, and antlers; rather, it is a series of chapters stimulating thoughts, discus sions, and initiation of new studies. As editors, we did not interfere with the content of articles nor with the opin ions and interpretations of our contributors, and we left them to decide whether to accept the suggestions of our reviewers. Despite the fact that various aspects of cranial appendages have been studied since the end of the eighteenth century, many controversial views still exist, as witnessed in various chapters of this book.
Whose strong horns are these? A rhino's strong horns, of course Little ones will love to see the close-up photography and try to guess which animal the curved, ridged, spiral, or long horns belong to. Animals featured: alpine ibex, gazelle, markhor, rhino, highland cow, and banteng.
The Arthur M. Sackler Colloquia of the National Academy of Sciences address scientific topics of broad and current interest, cutting across the boundaries of traditional disciplines. Each year, four or five such colloquia are scheduled, typically two days in length and international in scope. Colloquia are organized by a member of the Academy, often with the assistance of an organizing committee, and feature presentations by leading scientists in the field and discussions with a hundred or more researchers with an interest in the topic. Colloquia presentations are recorded and posted on the National Academy of Sciences Sackler colloquia website and published on CD-ROM. These Colloquia are made possible by a generous gift from Mrs. Jill Sackler, in memory of her husband, Arthur M. Sackler.
In parts of Korea and China, moon bears, black but for the crescent-shaped patch of white on their chests, are captured in the wild and brought to "bear farms" where they are imprisoned in squeeze cages, and a steel catheter is inserted into their gall bladders. The dripping bile is collected as a cure for ailments ranging from an upset stomach to skin burns. The bear may live as long as fifteen years in this state. Rhinos are being illegally poached for their horns, as are tigers for their bones, thought to improve virility. Booming economies and growing wealth in parts of Asia are increasing demand for these precious medicinals. Already endangered species are being sacrificed for temporary treatments for nausea and erectile dysfunction. Richard Ellis, one of the world's foremost experts in wildlife extinction, brings his alarm to the pages of Tiger Bone & Rhino Horn, in the hope that through an exposure of this drug trade, something can be done to save the animals most direly threatened. Trade in animal parts for traditional Chinese medicine is a leading cause of species endangerment in Asia, and poaching is increasing at an alarming rate. Most of traditional Chinese medicine relies on herbs and other plants, and is not a cause for concern. Ellis illuminates those aspects of traditional medicine, but as wildlife habitats are shrinking for the hunted large species, the situation is becoming ever more critical. One hundred years ago, there were probably 100,000 tigers in India, South China, Sumatra, Bali, Java, and the Russian Far East. The South Chinese, Caspian, Balinese, and Javan species are extinct. There are now fewer than 5,000 tigers in all of India, and the numbers are dropping fast. There are five species of rhinoceros--three in Asia and two in Africa--and all have been hunted to near extinction so their horns can be ground into powder, not for aphrodisiacs, as commonly thought, but for ailments ranging from arthritis to depression. In 1930, there were 80,000 black rhinos in Africa. Now there are fewer than 2,500. Tigers, bears, and rhinos are not the only animals pursued for the sake of alleviating human ills--the list includes musk deer, sharks, saiga antelope, seahorses, porcupines, monkeys, beavers, and sea lions--but the dwindling numbers of those rare species call us to attention. Ellis tells us what has been done successfully, and contemplates what can and must be done to save these animals or, sadly, our children will witness the extinction of tigers, rhinos, and moon bears in their lifetime.