Amphibians, including frogs, salamanders, and caecilians, are unique animals with backbones that can breathe through their skin. Unlike reptiles, birds, and mammals, their young do not develop in an amniotic sac. Amphibians have a cloaca, a body cavity that collects waste from the genital, intestinal, and urinary canals, which is then expelled through an external opening. These creatures are often found in aquatic environments and are known for their buoyancy. Understanding amphibians is crucial as they play a significant role in ecosystems, acting as both predators and prey, and their health can indicate environmental changes.
QUESTION: How might the decline in amphibian populations affect ecosystems and the balance of nature?
Farting fish and tooting manatees — how some animals use gas
