Category: Zoology

Amphibians, known for their ability to live both on land and in water, possess a unique respiratory system. In fact, many amphibians use both their skin and lungs for respiration, a fascinating adaptation that allows them to survive in a variety of habitats, from underwater hibernation to terrestrial life.

The development of a body cavity, or coelom, was a major evolutionary step in the animal kingdom, allowing for greater complexity. This anatomical feature separates an animal's digestive tract from its outer body wall. So, what is another name for a true body cavity? It is the **coelom**, and its presence or absence is a key characteristic used in animal classification.

The animal kingdom showcases some of nature's most extreme survival tactics, and few are more dramatic than autotomy, the voluntary shedding of a body part as a defensive reflex. This highly specialized adaptation allows creatures ranging from lizards to sea slugs to escape the clutches of a predator.

Did you know that polycephaly, the condition of having multiple heads, has been documented in animal fossils dating back at least 150 million years? Understanding **what is the meaning of bicephalic** illuminates a rare congenital condition affecting animals and, in extremely rare cases, humans.