Animals Archives

January 25, 2021January 24, 2021

Squid Communication by Bioluminescence

Several Bible passages encourage us to look at the creation around us and know there is a God by what He has made. Romans 1:20 says, “For the invisible things of Him from the creation of the world are clearly seen, being understood by the things that are made, even His eternal power and divine nature have been clearly seen being understood from what has been made, so that men are without excuse.” We can see the power and nature of God by looking at the things in the natural world all around us. One of those things is squid communication by bioluminescence.

Humboldt squid (Dosidicus gigas) living 1500 feet (457 m) below the ocean’s surface in total darkness hunt for food in groups. These are big animals averaging six feet (1.8 m) long, but they don’t bump into each other. Recent research has shown that Humboldt squid use squid communication by bioluminescence. The squid have small light-producing organs in their muscle tissue, and they can convey information by changing the pigmentation pattern.

Scientists from Stanford University and the Monterey Bay Aquarium Research Institute say that what these squid do is similar to humans using turn signals in traffic. But even more than that, they can use changes in pigmentation patterns in a way similar to how humans arrange words in a sentence. Ben Buford of Stanford says that this is an example of a complicated form of animal communication never seen before in deep-sea creatures.

The more we learn about creation, the more we see complexity and design that speaks of a Creator who built into every animal the tools for survival. Squid communication by bioluminescence is just one more evidence of design. Indeed we can know there is a God through the things He has made.

Reference: National Wildlife magazine, February/March 2021, page 8.

January 21, 2021January 21, 2021

Zoonotic Diseases and Pandemics

The ancient Israelites’ diet consisted of very little meat, and most of that came from animals they raised. That was not true in the rest of the world. For many people in China and Africa, survival meant hunting animals and using them for food. We now know that many of the animals people ate were intermediate hosts for viruses. A virus can exist for many generations in a wild animal and mutate until it can jump to human populations, creating zoonotic diseases. The list of viral and bacterial diseases that have originated in wildlife grows constantly. A partial list includes SARS, MERS, Ebola, AIDS, Zika, Lyme Disease, rabies, swine flu, and COVID-19.

Wet markets, common in parts of Asia and Africa, are a significant source of zoonotic diseases. There animals, including rats, snakes, birds, bats, and monkeys, are kept in cages and killed when people purchase them for food. The filthy environment allows saliva, urine, and feces to become mixed with the blood of animals slaughtered on the spot. Experts say 376 wildlife species are known hosts to zoonotic pathogens, and at least 700,000 different viruses have the potential to jump to human populations. Christian Walzer, executive director of health for the Wildlife Conservation Society, calls wet markets “cauldrons of contagion.”

In Old Testament times, the Jews had very strict rules about what meat they could eat and how to prepare it. One of the priest’s jobs was to inspect the meat that people consumed to make sure it conformed to specific rules preventing zoonotic diseases. That was the world in which Christianity began, and early Christians benefitted from the rules they inherited. The instruction of the apostles was not to eat blood or animals that had been strangled. (See Acts 15:20,29 and Acts 21:25.)

In Acts 10:11-16, we read the account of God telling Peter, “What God has cleansed you should not call common.” The message was that all people are precious to God, but it also implied that there was no longer religious significance to eating the meat of various animals. The dietary laws that God gave Israel centuries before were “nailed to the cross” of Christ (Colossians 2:13-17). However, what is religiously acceptable is not always biologically advisable.

It seems that the battle of the 21st century may be zoonotic diseases caused by eating animals that carry viruses to which humans are not immune. There were good hygienic reasons for the instructions God gave to ancient Israel.

Data from National Wildlife magazine, February-March, 2021 pages 22–29.

January 20, 2021January 20, 2021

Native Plants Are Best for Birds

One of the ecological issues of recent years has been the role of invasive species and how they affect local birds and mammals. Recent studies show that berries produced by native plants are best for birds. Besides that, the birds prefer local varieties over the fruits of introduced species.

Studies of native bayberries have shown that they contain more fats, carbohydrates, and nutrients that birds need to survive. Amanda Gallinat of Utah State University said that invasive fruits are usually nutrient-poor. For people who enjoy watching birds, that is something to keep in mind when choosing plants for their yards.

Viburnums such as arrow-wood viburnum produce berries that are high in fats and carbohydrates, which help birds prepare for making long migration flights. For birds that stay around in the cold weather, another factor that favors native plants is how long they hang on to their berries. Winterberry is a native holly that can hold its berries well into the cold months.

When you talk about the design built into the migrations and lives of birds, it is not just the birds’ design but also the design of the nutritional system that supports them. Native plants are best for birds because they often give the birds better nutritional support than species brought in from other areas of the world.

God’s design for life is best, but humans often introduce non-native plants and animals that sometimes become invasive species. People may introduce non-native species with good intentions, or perhaps invasive species arrive by accident with foreign cargo. Either way, we must learn to be better stewards of the planet over which God gave us dominion. (See Genesis 1:28.)

Data from National Wildlife, February-March 2021, page 12.

January 19, 2021January 18, 2021

Subnivium Ecosystem Harbors Life

We humans don’t always like the winter snow for its inconvenience and sometimes safety threat. For many animals, the snow-cover makes winter the best time of year. Scientists who study life in this seasonal microenvironment under the snow call it the subnivium ecosystem. It allows many species of plants and animals to exist that could not survive without snow.

The first scientific writings about the subnivium world were circulated by a lepidopterist (a scientist who studies butterflies) named Vladimir Nabokov. Nabokov was investigating butterflies whose caterpillars eat plants known as blue lupines. These butterflies lay their eggs on the stems of the lupines a few inches above the ground. When snow covers the area, the eggs are protected from the very low temperatures of the mountains where the butterflies live. Scientists conducted a study of those same butterflies in 2019 when there was a significant decrease in the snow cover. They found a 43% decrease in the number of butterflies produced.

This is just one example of life in the subnivium ecosystem. Ruffed grouse burrow into the snow at night and stay in an igloo-like area that can be 50 degrees warmer than the outside air. In wintertime, a surprising number of animals live in the warmer subnivium ecosystem. Wolverines, martens, voles, mice, shrews, red squirrels, and even bears take advantage of heavy snow cover. The protection of snow allows abundant life at high elevations and in polar areas.

Every part of Earth is home to living things because of the design of the animals and plants and the design of water that gives snow thermodynamic properties. It is easy to overlook the statement God made to Job about “the treasures of the snow” (Job 38:22). The simplicity of those words describes a whole world of life in the subnivium ecosystem and the treasure of water stored on snow-covered mountains. The treasure house of snow speaks of the intelligence built into every corner of creation.

Data from National Wildlife magazine, February-March 2021.

January 17, 2021January 16, 2021

Bloodletting – Life Is In the Blood

For almost 2000 years, from ancient Greece to the nineteenth-century, the most common procedure performed by surgeons was bloodletting. The doctors would cut the patient to allow blood to drain because they thought this would drain disease from the body. In truth, if it didn’t kill the patients, bloodletting at least left them weaker. The medical establishment didn’t realize that life is in the blood.

Even though William Harvey disproved the effectiveness of bloodletting in 1628, doctors (and barbers) still practiced it for another 200 years. It can take a long time for false ideas to be abandoned, even by doctors and scientists. In some areas such as China and the Middle East, people still practice a form of bloodletting today known as hijama or cupping.

While they were still practicing bloodletting, doctors began to experiment with blood transfusions. Early experiments in the seventeenth-century involved transfusions of animal blood into humans, usually with disastrous results. Doctors didn’t realize that there are different blood types among humans and even among animals. Different blood types have a different molecular structure in the red blood cells. If a patient is given blood of the wrong type, it can cause a reaction that can be fatal, because the patient’s immune system attacks the foreign blood cells as invaders.

In 1901 Karl Landsteiner found that mixing blood from different patients sometimes caused clotting. This led him to classify blood into three types—A, B, and O. Scientists have discovered more blood groups since then, making transfusions much safer today.

If those who practiced bloodletting had paid more attention to the Bible, they might have realized much sooner that it was a bad idea. “The life of every creature is in the blood” is stated twice in Leviticus 17 verses 11 and 14. With that admonition, God commanded the ancient Israelites to refrain from eating blood and to sacrifice the blood of animals to cover their sins. But the final redemption for sins came when “God presented Christ as a sacrifice of atonement, through the shedding of his blood” (Romans 3:25). Life is in the blood, and eternal life is in the blood of Christ.

January 5, 2021January 4, 2021

Ant Armor for Leafcutter Ants

The study of insects continues to find design features that enable them to survive when it seems their enemies should wipe them out. The numerous ant species have a variety of defense mechanisms. Entomologists at the University of Wisconsin have discovered ant armor for leafcutter ants.

Leafcutter ants are small and must protect themselves from larger predatory ants. Researchers found that they have a tough coat of mineral armor. Entomologists studying Acromyrmex echinatior worker ants found that their exoskeleton has a thin white protective coating. After trying various methods to remove that mysterious layer, researchers discovered that it is calcite with high magnesium levels.

The thin protective layer, only 7% of the exoskeleton’s thickness, more than doubles the leafcutter ant’s hardness. When larger soldier ants of another species attacked, they were not able to kill the leaf cutterants.

Ant armor for leafcutter ants is similar to the mineral protection that crabs and other crustaceans have, but scientists had not discovered it in ants before. How did these ants get this protection? Researchers theorize that external microbes the ants carry are responsible. That means this is another example of symbiosis between species–another evidence of design. The scientist leading this study said that learning how this tough coating forms could help technicians develop protective coatings for various products.

It seems that God has given every species of life on this planet protection against their natural enemies. Not only must all lifeforms have a ready supply of food and adequate water, but they must have physical protection. Ant armor for leafcutter ants is only one example of God’s intricate design for life.

Reference: Science News, December 19, 2020.

January 3, 2021January 5, 2021

“Truth In Nature” by Don Betts

One of our readers wrote the following poem and sent it to us. We share it with you to show one person’s evaluation of this ministry. The title is “Truth in Nature” by Don Betts.

Does God Exist? Of course, He does!
My brother John says so.
He digs deep for evidence,
So you and I may know
That God in all His glory lives.
His sign is everywhere
Extant in oh, so many things,
Wonders made for us to share.

John’s compiled a Dandy List,
Designs in nature meant to be
Proof in things that now exist
In which God’s face we see.
The truth of His existence
Is everywhere we look,
And our hope lies in persistence
Worded in His Holy Book!

Yes, we can find truth in nature as we see God’s design.

January 2, 2021January 2, 2021

New Year Pagan Beliefs and Superstitions

As we begin a new year, we realize that many of our 21st-century traditions are rooted in new year pagan beliefs and superstitions about animals.

January gets its name from the Roman god Janus – the protector of gates and doorways. A tradition arose to drive away the forces of darkness by making noise. In Thailand, people fire guns. In China, they set off fireworks. In Switzerland, people beat drums, and in Italy, they ring church bells. In the early American colonies, people fired guns to drive away evil spirits. Today, people use party horns and sirens.

February comes from the Latin word “februa,” meaning to cleanse. The name originated in the Roman celebration Februalia, a month-long festival of purification and atonement. February’s most interesting tradition is on February 2, Groundhog Day, which falls on the midpoint between the winter solstice and the spring equinox. For centuries, farmers in France and England looked to a bear to indicate if there would be more winter weather. In Germany, a badger told farmers if winter was ending, so they knew when to plant and hire laborers.

When German immigrants came to Pennsylvania in the 1800s, they brought this tradition with them. There were no badgers in Pennsylvania, so they substituted a groundhog. In 1887, the people of Punxsutawney, Pennsylvania, invented Punxatawney Phil to predict the seasonal change. Other towns have adopted their own groundhog traditions, such as Wiarton Willie in Wiarton, Ontario. Studies have shown no consistent correlation between the predictions of the groundhogs and the arrival of spring weather.

I have a farmer friend who swears he can tell how bad winter will be by looking at the caterpillars in his garden. I have seen energy-charged debates about whether animal behavior can predict the weather. So many variables control climate that humans will always have problems trying to predict when spring will arrive and when to plant crops.

New year pagan beliefs and superstitions involving animals are not dependable. One thing that is always right and never misleading is the teaching of Jesus Christ. When you read Matthew 5 – 7, you will find principles that are true and unchanging. Trust God’s Word to guide your life, and realize that the physical world in which we live will always be unpredictable. Any human attempts to predict the future will always be prone to error.

Some of this data came from The Old Farmers Almanac at Almanac.com/Store.

December 30, 2020December 29, 2020

World’s Only Poisonous Rodent

An exciting area of study is the way various animals protect themselves against would-be predators. We find one of the most unusual methods in the African crested rat (Lophiomys imhausi), also known as the maned rat. It’s the world’s only poisonous rodent.

Crested rats have a white-bordered mane that extends from the top of the head to the base of the tail. Their body can be up to 14 inches (360 mm) long, or 21 inches (530 mm) if you include the tail. They would make a very nice meal for a wild dog or hyena if they didn’t have a poison defense system.

Crested rats chew the bark of the poison arrow tree (Acokanthera schimperi). They spit out the chewed matter and rub it on the coarse fur of their mane. When threatened, the rat’s mane stands erect, so the poison is the first thing a predator will contact. The toxin is strong enough to kill a wild dog or hyena.

Researchers studying crested rats report that their behavior demonstrates that they are aware of their poisonous nature. It seems to be built into the DNA of these animals to know how to secure the toxin. Animals such as skunks produce their own noxious chemicals for defense, but they are not poisonous. Scientists have not found any other mammal that collects poison from a plant species and stores it for protection. Crested rats depend on the poison arrow tree and don’t seem to be harmed by the poison.

How does the world’s only poisonous rodent develop such a tool for survival? We see God’s design over and over in animal behavior and the tools that they know how to use.

December 17, 2020December 16, 2020

Seahorse Role Reversal

In most animal species, the female is the one who gives birth and cares for the young, but that is not always the case. One exception to that rule is the seahorse role reversal.

Females seahorses compete to secure a mate. The female is the leader in the courtship ritual, which involves an extended “dance.” After the ritual, the female will deposit her eggs in a pouch on the front of the male. The male fertilizes the eggs and keeps the embryo sea horses for as long as ten weeks.

At the end of that time, the male ejects the young with muscle contractions, pushing them out into the ocean to fend for themselves. There can be dozens or hundreds of tiny seahorses, depending on how big the male is. Sea horses live in dense seaweed, which supplies food and hides them from predators. Small fish such as seahorses are easy prey for many animals in the sea, so they need to reproduce in large numbers.

Besides the seahorse role reversal, there are other cases in the natural world where a male is the caregiver for offspring. Diversity is the answer to many needs of a balanced life system, and the male and female roles can be different depending on the needs of the ecosystem.

The more we learn of the natural world, the more examples we see of incredible design and planning which reflect God’s actions in preparing this planet for human life. We all have a role in protecting the diversity of living things God has placed in our care.

National Wildlife magazine for December-January 2021 has pictures of seahorse birthing.