Nature’s balance depends on a web of predatory animals that have teeth, claws, speed and other adaptations for catching their food. This balance also hinges on prey animals with clever defenses to avoid becoming food.
The best way to tell one rhino from another is to politely request some form of identification. Kidding! Seriously, African rhinos have two horns, the Indian or greater one-horned rhino has only one horn.
Different kinds of aquatic (water-dwelling) animals use similar tricks of the survival trade. This section demonstrates this point with a look an aquatic bird and a water-loving mammal.
Koalas have a specialized digestive system that removes the toxins from eucalyptus leaves. The toxins, which serve as important natural insecticides, are poisonous to most other animals.
From deadly venoms to insect repellants to stink bombs, animals produce and use powerful chemicals to attack food and repel danger.
How do all alligators look different from crocodiles? The standard rule is this: When a croc’s mouth is closed, the fourth pair of teeth on its lower jaw is visible. On alligators these teeth are covered up.
In the wild world of nature, survival often depends on sitting in one place and looking like something you’re not. It’s all about adaptations that fool the eye.
The platypus has a venomous spur on each of its hind ankles. It is one of only three known egg-laying mammals. (The other two, called echidnas, look like small spiny anteaters.)
Tusks, spines, and even sharp toenails are just some of the adaptations animals use, to defend themselves from predators.
You are a mammal. All mammals have four-chambered hearts, three unique ear bones in each ear, they nurse their young, and almost all have hair at some point in their lives.
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