Featured in the newest Dialogue Magazine »

Articles » Zoology

 

Armadillos (Spanish for little armoured one) are New World nocturnal mammals covered by a leathery armour shell overlaid by horn. Of all living animals, “few are as amazing … as the armadillos” (Storrs, 1982). Even Carolus Linnaeus, the father of taxonomy, was puzzled about how to classify this “strange-looking mammal” (Smith and Doughty, 1984, p. 2). They are shy, timid mammals that mammalogist David Lamp calls bizarre (1977, p. 36). They look nothing like any other living animal, appearing much more like a fierce miniature dinosaur. These nearly blind and deaf animals must use their keen sense of smell to locate food. Read the rest of this entry »


Dragonflies: Fancy Catchers

Dragonflies: Fancy Catchers

Introductory

The ball arcs into the air, and then downward. A player rushes forward. Whew!! Another save made. The player’s strategy was to move to intercept the ball as it follows a predictable trajectory downward. We are happy the ball was caught, but the situation was not complicated. This is called a “constant bearing strategy” in pursuit of a target moving in a predictable arc. The strategy becomes more serious however when we learn that many animals similarly catch their prey by converging on the straightforward escape route of the hapless victim. Read the rest of this entry »


Manatees (family Trichechidae, genus Trichechus), often called sea cows, are large, fully aquatic, mostly herbivorous marine mammals. Three living species exist, the Amazonian, West Indian, and the West African manatee. These are huge animals weighing from 400 to 550 kilograms (880 to 1,210 lb), and 2.8 to 3.0 metres (9.2 to 9.8 ft) long. The females tend to be both larger and heavier.

In many ways manatees are unique compared to all other life forms, a fact that poses major problems for evolutionists. It is almost like a designer selected their traits from a wide variety of existing life forms, from reptiles to fish to mammals. For example, manatees feed almost entirely on aquatic plants and that is “unique among living marine mammals” (Berta, 2012. Return to the Sea: The Life and Evolutionary Times of Marine Mammals. University of California Press. Berkeley p. 127). Read the rest of this entry »


Elementary My Dear Readers

Elementary My Dear Readers

Children

Book Review of Guide to Animals

The author, Frank Sherwin has organized his introduction to animals in interesting ways. The message is conveyed partly by the text, partly by his organization of topics, but also by the amazing variety of beautiful illustrations. In style, this book closely resembles its sister publication Guide to Creation Basics. Read the rest of this entry »


Animal Secrets from High Tech Espionage

Animal Secrets from High Tech Espionage

Introductory

Animals display many remarkable behaviours. To better appreciate their talents, how often have we wished that these creatures could communicate with us? We would love to know where they go during migrations, for example. In recent years however, animal ecologists have developed techniques to allow us to track some of these creatures. As a result, these animals communicate with us simply by doing what comes naturally, during the course of which our little espionage devices report where the animals have gone. Read the rest of this entry »


In many parts of North American, the most common wild mammals one sees are  rodents in the order Rodentia. The largest known modern rodent is the South American semiaquatic capybara, which can grow to be 107 to 134 cm (3.51 to 4.40 ft) long, 50 to 64 cm (20 to 25 in) tall and typically weighs 35 to 66 kg (77 to 150 lb). Rodents are classified in one of the most successful mammalian groups today (Churakov et al. p. 1315). Read the rest of this entry »


Appreciating Rodents

Appreciating Rodents

Introductory

Most people have a love-hate relationship with rodents. That is, people love to hate them. This is a pity since rodents exhibit various interesting talents. For a start, when we think of rodents, we think of rats. Rats certainly have a bad reputation because they thrive in so many environments where nobody wants them. Nevertheless rats are smart and individually very clean. Most rats live less than a year in the wild. Mama rats however are definitely overachievers. Read the rest of this entry »


Beauty Reconsidered

Beauty Reconsidered

Introductory

Sometimes scientific studies seem more frivolous than serious work. That does not happen too often, of course since scientific research is expensive. However there was one study published in 2005 that did seem “cute rather than deep” (in the words of psychologist Steven Pinker of Harvard University.) Actually the study was intended to demonstrate serious evolutionary implications. As such it was chosen as the cover story for the December 22/29 December 2005 issue of Nature. Thus the caption on the cover featured the expression: “Fascinating Rhythm: Dancing’s Role in Sexual Selection.”  However on November 27/13 Nature withdrew this article from its published collection. Read the rest of this entry »


New DVD — the Most Exciting Yet!

New DVD — the Most Exciting Yet!

Introductory

Illustra Media has produced many excellent DVDs, but the last one Flight: the Genius of Birds is one of their most awesome! It is certainly one that will appeal to entire families. While the previously released Metamorphosis (dealing with butterflies) provides amazing scenes and discussion, Flight not only provides wonderful photography, but also discussion which is easily understood by all. Moreover, even if one could not understand a word of the commentary, the scenes of birds in flight and the graphics still convey a powerful message. Read the rest of this entry »


The Amazing Dromedary Camel

The Amazing Dromedary Camel

Introductory

Camels are one of the most amazing animals known to humans. They are the workhorse of the desert and a gift to generations of people. The Bible mentions camels over 60 times, indicating their central importance in Biblical times. The Bible notes two kinds of camels, the two humped Bactrian camel, and the larger one hump dromedary camel, Camelus dromedarius, family Camelidae. Both kinds now live in the hot dry deserts of the Middle East. Read the rest of this entry »


A tail is a distinct, flexible appendage attached to the torso of the rear section of an animal’s body. It is the body part that corresponds roughly to the coccyx in mammals, reptiles, and birds. Tails are primarily a feature of vertebrates, although some invertebrates, including scorpions and springtails, have tails. Even snails and slugs have tail-like appendages sometimes referred to as tails. Read the rest of this entry »


The archer fish (Toxotidae jaculatrix, from ejaculator fish) –– named due to its expert archery skills–– is one of the most amazing types of fish known to humans (Smith, 1936). When first researched by scientists in the 1920s, researchers “could hardly believe their eyes” at its shooting ability (Pinney, 1977, p. 3). The existence of the fish was actually first reported by explorers in 1764, but scholars could not accept the reports of the existence of this amazing fish (Lüling, 1963, p. 100). Read the rest of this entry »


Book Review: The World of Animals

Book Review: The World of Animals

ChildrenIntroductory

Every family, whether into science of not, should obtain a copy of this book for the sake of their children (upper elementary through high school). This deluxe book, The World of Animals, is a wonderful reference book which describes anatomy and ecological significance of the main groups of animals. Read the rest of this entry »


First Catch Everybody’s Interest!

First Catch Everybody’s Interest!

Introductory

Most people recognize that it is more fun to read a story than to plow through a text-book! Usually however the objectives of the two genres are different: the story is for enjoyment and the text for learning. There have been many stories written, however, to communicate an important message. Charles Dickens’ novels like Great Expectations, for example, spring to mind. So it is with Michael and Beverly Oard’s book Uncovering the Mysterious Woolly Mammoth: Life at the End of the Great Ice Age.

Read the rest of this entry »


No Evidence for Shark Evolution

No Evidence for Shark Evolution

Introductory

No sea animal elicits such fear and terror in the common people as do sharks. Gruesome shark attacks on humans are part of both the folklore and history of many cultures, including our own. Their predatory skill both fascinates and frightens us. Even though sharks rarely attack humans, when an attack occurs, it tends to be widely publicized by the mass media. Ironically, their very survival is now threatened by human-related activities, such as net fishing.

Read the rest of this entry »