Animals Archives

September 10, 2024September 9, 2024

Protecting Parasites from Extinction

We tend to view parasites as destructive, even repulsive, unwanted nuisances. However, scientists are finding that parasites often perform beneficial roles in the ecosystem. Some scientists think we should be protecting parasites from extinction.

Scientists are concerned that we have not studied the roles of parasites in maintaining a balanced ecosystem. For example, a parasite known as Toxoplasma gondii infects mice, causing them to lose their fear of cats. Cats have an acid in their gut that Toxoplasma gondii needs to reproduce, so the mouse is an intermediate host for the parasite to get into the cat. This appears to be a highly designed system in which a parasite controls the mouse population through cats.

Kayce Bell of the Los Angeles County Natural History Museum said, “If you remove something from an ecosystem, we cannot foresee what the consequences will be.” That is true of familiar plants and animals but may also be true of parasites. Moreover, it seems that some parasites keep other parasites under control. In 2020, scientists who study parasites published a paper in the journal Biological Conservation calling for protecting parasites from extinction, beginning with a study of what parasites exist.

Scientists estimate that 40% of all known animal species on Earth are parasites. The bottom line is that we don’t understand the role parasites play in the natural world. The fact that we don’t know what beneficial things parasites do is a challenge as we struggle to conserve ecosystems worldwide. Everywhere we look, we see a system design that testifies to a Designer.

— John N. Clayton © 2024
Reference: “The Problem with Parasites” in Discover magazine for September/October 2024, pages 21-28

September 4, 2024September 3, 2024

Problems Our Ancestors Had in Securing Food

In our day of domesticated cattle, we may not appreciate the problems our ancestors had in securing food and other essentials. The Bible and the fossil record agree that the first humans were gatherers, eating only things that could be secured by hand, primarily plants. Genesis 4:2 indicates that Abel was a keeper of the flocks, probably sheep. In Genesis 9:3, God says, “Everything that lives and moves will be food for you,” but verse 2 says that all the animals will be afraid of humans. Like many biblical passages, we are left with questions, so we can look to other methods for clarification. The fossil record and archaeological evidence do that for us.

There is a great deal of evidence that humans were gatherers before hunting animals became a method of getting food. The Bible does not tell us how Abel secured the flocks of Genesis 4:2, but the domestication of wild goats and sheep clearly occurred. Genesis 15:9 is the first mention of goats in the Bible, but recent DNA evidence shows that goats were domesticated in significant numbers by 8200 B.C. Goats provided milk and meat, but they also provided other valuable materials, including hair, hides, and sinew for use as clothing. Ancient people used goat bones as tools and their dung as fuel for fires. Goats were much easier to raise than sheep or other animals. Goats can eat about anything and survive in virtually any terrain. They were the perfect animals to meet the needs of early humans.

Despite the problems our ancestors had in securing food, the message here is plain. God has met every NEED that humans have. We are talking about needs, not wants. Some things we might like to have are not needs, and needs can sometimes be secured only by work. God told Adam, “In the sweat of your face, you will eat bread” (Genesis 3:19). God has made it available, but we must work to secure what we need. We know that God will bless us when we do the work He has given us to do.

September 3, 2024September 2, 2024

Elephant Communication System

Every animal has a way of communicating with others of its species to find food, for defense, or for mating. Each animal’s design includes a unique method of communication, and some of the methods are astounding. One of those is the elephant communication system. Recent studies show that African elephants engage in a type of communication previously unknown in nonhuman animals.

Elephants can hear sounds that humans cannot hear. Physics books tell us that humans can hear sounds between 20 hertz (cycles per second) and 20,000 hertz. This varies from person to person, with smaller humans hearing higher frequencies but not hearing lower ones and vice-versa for larger humans. In my physics classroom, I demonstrated this by producing frequencies between 20 and 20,000 hertz and noting that different students heard different sounds – sometimes painfully. I rarely had a student who could hear 20 hertz. Elephants can hear sounds as low as 5 hertz.

How does this low-frequency ability affect the elephant’s communication system? High-frequency sounds do not travel very far. Some bird species use high frequencies for a wide range of communications, but the sound travels only short distances. The low frequency of an elephant can travel over 1.5 miles. Elephant herds frequently split up to find food or water, and they convey their location to other groups from a distance.

The aspect of the elephant communication system that was previously unknown in animals is that they can attach vocal labels, similar to names, to individual elephants. They use a specific low-frequency sound to address a specific elephant. Their communication is so fine-tuned that they can send out a sound that only one elephant in a nearby herd responds to. Other elephants in both herds continue grazing and ignore the message.

The design of the elephant communication system is incredible and unique. Researchers are studying their apparatus to hear and send sounds, leading to a new understanding of how all animals communicate. Romans 1:20 tells us, “We can know there is a God through the things He has made.” Elephants and their communication system testify to that fact.

— John N. Clayton © 2024
Reference: “Elephants Call Their Relatives By Name Across the Savanna” in the September 2024 issue of Scientific American

August 30, 2024August 27, 2024

Dinosaur Fossils and Human Values

By the end of July 2024, I had personally received 98 written requests for financial help to address human needs. That is in addition to numerous phone calls and emails, and I am sure most of the needs are real. Pathetic pictures of starving children, people needing medical attention, and people victimized by war and greed tug at the heartstrings, but on a teacher’s pension, I cannot solve all of these issues. At the same time, we live in a world of corruption and badly distorted values, as demonstrated by the price of dinosaur fossils.

The largest and most complete stegosaurus fossil ever found was sold to a private collector for $44,600,000. A “mystery buyer” paid $12.4 million for a velociraptor skeleton, and in 2020, a Tyrannosaurus rex skeleton known as Stan sold for $31,800,000. While the academic community laments that these skeletons are lost to science, the more significant issue is what the price of dinosaur fossils says about human values. The Christian concept of love expressed by the Greek word “agape” permeates the teachings of Christ, but today, people vilify Christianity and ridicule the plea to love one another.

The media takes great delight in stories of the abuses of some who have claimed to be Christians. Sadly, some religious leaders spend massive amounts of money on religious structures, airplanes, cars, and personal homes, as non-believers spend excessive amounts on dinosaur fossils and entertainment.

Most of the people feeding needy children are motivated by their understanding of Jesus’ teachings. Digging wells so people aren’t forced to drink polluted water is almost entirely the work of people who express their faith in Christ and His teachings. Many followers of Jesus quietly take what little they have and use it to relieve human suffering.

In Matthew 25:31-46, Jesus indicates how God looks at our situation. Dedicated Christians who have the hope of eternal life prioritize addressing human needs. Those who use what God has loaned them to have a dinosaur skeleton in their private collection will learn that their lives are just as dead as the dinosaurs on which they spent their resources.

— John N. Clayton © 2024
Reference: The money paid for dinosaur fossils is in The Week for August 2, 2024, page 11.

August 21, 2024August 20, 2024

Bats Are Unique in Several Ways

Bats are among the most amazing creatures. The August 2024 issue of National Geographic was devoted to exploring research into all that bats can do and how they do it. Bats are unique in several ways.

There are over 1400 species of bats, ranging in size from the bumblebee bat, which weighs less than an ounce, to the flying fox, a fruit bat with a wingspan of nearly six feet and weighing up to three pounds. One-fifth of all mammal species on Earth are bats, and bats do many things that benefit humans. They consume mosquitoes and agricultural pests and are primary pollinators for bananas, mangoes, avocados, and durians (an important Asian fruit).

Bat wings are made of skin stretched on light bones with many joints, with muscles embedded in the skin. By comparison, bird wings have three joints. Bat wings have vast numbers of tiny hairs that sense airflow. Attempting to develop a drone in such a small space has turned out to be incredibly difficult. The quadcopter drones in widespread use can’t rival the flight of a bat in dark places.

Bats are unique in their long life expectancy and disease resistance. They can live for decades and rarely get cancers. They carry several viruses but are not affected by them. Some researchers suggested that COVID-19 jumped from bats to humans. Research shows that as bats age, their DNA is repaired, and scientists are studying this repair and immune activity.

It is interesting that the Bible doesn’t say much about bats. In Leviticus and Deuteronomy, bats are among the flying creatures God told the Israelites not to eat, a point that has interesting connections to viruses they can carry. Bats are unique and a critical part of the ecosystem that God designed. The more we understand about them, the more we see the hand of God in their creation. These small creatures are essential to God’s ecosystem and to us.

Reference: National Geographic for August 2024, pages 16-49

August 14, 2024August 13, 2024

Komodo Dragons and Dinosaurs

Komodo dragons can give us a clue to ancient carnivores. Many atheists and denominational creationists make incorrect assumptions, as we have heard members of both groups say the Bible claims there was no death until Adam and Eve ate the “forbidden fruit.” That is simply not true because you can’t eat anything without something dying. When talking with kids, I often use the fun statement, “When you eat a mouthful of corn, you just murdered a plant.” That is not actual murder, but the point is that death is a part of eating. Topsoil consists of minerals and organic material that came from things that died, including insects and all kinds of animals.

The Genesis statement refers to spiritual, not physical, death. We have pointed out in our materials that Genesis 1:1-3 describes Earth’s preparation for human habitation. By the end of those three verses, you have a planet with everything humans would need, including coal, oil, topsoil, and the minerals essential for life on land. God provided an ecosystem that could produce all those things. The dinosaurs produced massive amounts of organic matter buried in an anaerobic environment to produce coal. Carnivores were necessary to control the herbivores, and they had to efficiently kill multi-ton herbivores.

Recent studies of the Komodo dragon have shown that even today, we have an animal with the equipment of the ancient carnivores. Komodo dragons can grow up to 10 feet (3 m) long and kill water buffaloes weighing more than 1,000 pounds (450 kg). Studies of Komodo dragon teeth show that they have a thin iron protective coating along the cutting edges and tips to keep them sharp. Because iron oxidizes, the iron in long-dead dinosaurs is no longer detectable, but studies indicate that T. rex probably had the same tooth design.

God designed carnivores to maintain the biological balance needed on a healthy planet. Komodo dragons give us a clue about the design features of carnivorous dinosaurs.

— John N. Clayton © 2024
Reference: Komodo dragon in wikipedia.org

July 25, 2024July 23, 2024

Smalltooth Sawfish “Pocket Protector”

An interesting creature lives in the ocean off southern Florida and the Bahamas. The smalltooth sawfish (Pristis pectinata) is a member of the ray family with a snout lined with needle-sharp teeth that it can use to cut vegetation or chop up a predator that gets too close. The amazing thing about this fish is that the babies are live-born. The question is how can a baby sawfish avoid cutting up its mother or siblings before birth.

The answer to that question has come from researchers at the Florida Fish and Wildlife Conservation Commission in Charlotte Harbor. They found that the baby sawfish’s teeth are housed in a sheath during its life inside the mother. It’s essentially a second skin that the smalltooth sawfish sheds about four days after birth. The researchers say the sheath feels like paraffin wax, which you can’t peel off, but with a slight give. The chemical composition of the sheath shows that it has two layers made of proteins similar to ordinary skin.

The ocean is full of living things with incredibly complex and specialized designs, enabling them to exist in unique environments. The lead researcher, Gregg Poulakis, said, “It’s a cool thing Mother Nature figured out to protect mom from those calcified teeth and protect siblings from sword fighting in the uterus.” Trying to explain such design by gradual evolution requires intermediate steps leading to the design features we see today. Those intermediate steps do not exist.

Every discovery speaks of an intelligence that filled in ecological niches and survival techniques like what we see in the sawfish. Romans 1:20 tells us that we can know God exists through the things He has made. The number of examples of cases like the smalltooth sawfish continues to grow as science learns more about the complexity of the world in which we live.

Reference: Science News magazine for July 13, 2024, page 5 and sciencenews.org

July 17, 2024July 16, 2024

Trout Fins Are Designed for Efficient Swimming

Technology has allowed us to see the design of things in the natural world. Dr. Haibo Dong at the University of Virginia has used 3D computer models to study the turbulence created with each fin of a trout. American Scientist magazine states, “Interactions between swirling eddies created by a swimming trout show how its body is optimally laid out for energy-efficient movement.” Trout fins are designed for efficient swimming.

A trout’s body is shaped to swim through the water with less drag than any other shape. However, the role of various fins is not easy to see. Virtually all fish have a dorsal fin on the back and a caudal fin on the tail. Trout have other fins, including pectoral fins near their heads and pelvic fins near the center of their bellies. Toward the back of the trout’s body is a small adipose fin on top and an anal fin on the underside. The researchers have shown that the fin locations increase the thrust the tail produces. The anal fin produces 8.6% more thrust reducing the drag by 18.6%. Trout fins are designed for efficient swimming, or as the researchers conclude, “the whole trout is optimized for efficient swimming.”

Other fish have different fin arrangements to match their survival needs. A tuna living in the open ocean has a different layout of fins because it is designed for speed rather than efficiency. Fish that confine their existence to the bottom of a lake or river will not have the same fin layout as the tuna or the trout. For example, catfish have a fin arrangement designed for protection. Those of us who have grabbed a catfish incorrectly may have suffered a painful jab from its fins. Trout fins are designed for efficient swimming since they make long migrations, swimming upstream and sometimes over waterfalls.

Our technology allows us to understand the various designs seen in living things. Trout fishermen know that catching a trout differs from catching any other fish because of their mobility and muscular nature. Research has shown that the trout’s design shows wisdom right down to the shape and location of its fins. We suggest that this design is the product of a Designer, not just blind opportunistic chance. Genesis 1:21 tells us, “God created the great creatures of the sea and every living and moving thing with which the water teems..” Thanks to technology, we understand how over-simplified that statement is.

Reference: “Fins Working Together” in American Scientist magazine for July-August 2024, pages 204-206.

July 3, 2024July 2, 2024

Firefly Frequencies at Work

There are 56 species of flying lightning bugs, or fireflies, and each emits light of a different frequency. The different firefly frequencies cause different colors, such as green, yellow, or red, but science has found that the frequencies are far more precise than the color. The fact that each species has a particular wavelength allows fireflies to find mates, even in an area where other life forms use bioluminescence.

Fireflies have four stages. They begin as eggs but spend most of their 61-day existence as larvae, eating snails, slugs, and worms. They have a pupa stage just before becoming adults. Bioluminescence serves mainly as a way for males and females to find each other, and having the right frequency is essential in that process. Research is continuing on how the frequencies are specified, but 56 species means that the frequency variation has to be carefully created and controlled.

Most living things have methods of communication that serve multiple purposes. Communication allowing males and females to find each other is always risky because it exposes them to predators. Because fireflies’ flashing is sporadic and not a steady glow, they are less likely to be eaten. If you have tried to catch these flying lightning bugs, you know how hard it is because they flash and run, making them hard to locate.

We can learn many things by studying the natrual world, including the chemistry that allows various firefly frequencies of bioluminescence. In the firefly we see another demonstration of God’s wisdom and intelligence.

Reference: PBS “Nature” program on May 16, 2024.

July 2, 2024July 1, 2024

Animal Memory Capacity

One of the most interesting areas of study in living things is animal memory capacity. Memory is designed into animals to benefit both them and other forms of life in their ecosystem. We see a good example of partial memory in squirrels who bury massive numbers of seeds, such as acorns, but only remember where they put a fraction of them. What that means is that the squirrels have enough to eat, but they plant trees over a huge geographic area. There are many forms of life where partial memory serves a similar purpose.

On the other hand, some life forms remember virtually 100%. A good example of this is Clark’s Nutcrackers. They survive on pinion seeds, and a single bird may hide as many as 30,000 seeds, placing 4 or 5 seeds in each spot. Throughout the winter, the Nutcracker, when hungry, will return to each hiding place to get food. By the time spring arrives, this bird will have consumed almost all of the seeds hidden in thousands of different places.

It is interesting that different forms of life have different memory capacities that benefit not only themselves but also their environment. You could compare it to thumb drives for your computer, having different memory capacities depending on the thumb drive’s design. God has placed different storage in the memory of the brain of each creature He created. In humans, that storage capacity is huge and can be accessed in many ways. In the animal world, there is an interaction with the environment that is beneficial to the animals and the environment.

Trying to explain this animal memory capacity by evolutionary reasoning is incredibly difficult and is full of assumptions. Those of us who believe in God as the creator understand why this kind of thing occurs over and over. It speaks of God and His wisdom and design in the world around us.

Reference: Our Fascinating Earth: Strange, True Stories of Nature’s Oddities, Bizarre Phenomena, and Scientific Curiosities by Dr. Philip Seff, Ph.D.