Perennibranchiate

Have you ever seen a fish with its gills? Gills are like special breathing holes that help fish get oxygen from the water. Well, some animals called amphibians, like the mudpuppy, are born with gills and they keep them their WHOLE lives! It's like never needing to learn how to breathe air! These animals are called 'perennibranchiate', which is a big word for 'always having gills'.

These amazing animals that keep their gills live in watery places. Think of cool, fresh water like lakes, rivers, and ponds. The mudpuppy, for example, likes to hang out in North America. Some other animals that might keep their gills live in places like the Cascade Mountains in North America too. They love to hide under rocks or in the mud at the bottom of the water.

Most animals that start with gills, like tadpoles, eventually grow lungs to breathe air when they get bigger. But perennibranchiate animals don't! They are happy breathing underwater their entire lives. This means they can stay in the water all the time, which is perfect for them. It's like having a superpower that lets you stay in your favorite playground forever!

There's another word for animals that DO lose their gills as they grow up: 'caducibranchiate'. It's the opposite of perennibranchiate! Think of a frog. A baby frog, called a tadpole, has gills and lives in water. But when it grows up, it loses its gills, grows legs, and can breathe air with lungs. So, perennibranchiate means 'always gills', and caducibranchiate means 'gills that go away'.