One of the things that scientists have studied in some detail is food chains. We now understand that for life to proliferate in harsh environments, it sometimes takes a highly specialized animal that is unique to that environment to fill the niche of food that other animals need. The deserts of northwest China, southern Mongolia, northern Africa, and the Arabian peninsula are good examples of harsh environments. The creature at the foundation of the food chain for higher forms of life is the jerboa by design.
This animal is about three inches (7.6 cm) long but has a tail that is over six inches (15 cm) and is flared at its end. The body is mouse-like, but the ears are a third longer than its head. The snout is like a pig’s, and its back legs look like a miniature model of a kangaroo. The back feet are elongated and very powerful and are covered with tufts of stiff hair. The front legs are very short, just barely able to reach its mouth.
The jerboa uses all of its unusual characteristics in a way that allows it to survive in an environment where most animals couldn’t last a day. The tufts on the feet enable it to walk on sand. The large ears are sensitive to very low volume sounds to hear predators approaching. The tail is a prop for standing still, and it gives stability when the animal jumps. It’s like a rudder in the air. When chased by a predator, the jerboa will change directions quickly and often to avoid capture. It can hop at up to 15 miles (24 km) per hour.
The jerboa ‘s diet is almost entirely insects, and it plays a major role in controlling the insect populations. The jerboa is a primary food source for birds of prey. The jerboa’s unique features enable it to survive even though it has many predators.
There are elaborate evolutionary explanations as to how this animal developed, but we see the jerboa by design. So many characteristics are unique to the jerboa that it requires a good imagination to derive a possible evolutionary scenario. God has designed creatures to fill even the harshest environments. Their capacity to adapt to those environments is further testimony to the wisdom built into the creation everywhere we look.
–John N. Clayton © 2018