VERTEBRATES

=VERTEBRATES=

Of them can **fly** || **Terrestrial** animals. Some are aquatic (dolphins), but only one, the bat can fly || The neck is very long
 * **VERTEBRATES** ||  **FISH**  ||  **AMPHIBIANS**  ||  **REPTILES**  ||  **BIRDS**  ||  **MAMMALS**  ||
 * **Habitat** || **Aquatic**. Some live in fresh water and some in salt water. || They begin life in water, and they always live in wet places. Adults are **terrestrial** animals || They are vertebrate **terrestrial** animals, but some spend a lot of time in water. || Terrestrial animals, most
 * **Body** || They are **fusiform** the body is wider in the middle than at the ends || Amphibian **skin is moist** and has no covering. Some amphibians have glands that produce toxins. || Their bodies are covered with **hard scales** to keep them warm. Adult lizards and snakes shed their skin, but tortoise have a hard shell called a **carapace** || It´s **aerodynamic,** adapted for flight.

It´s covered with feathers Bird bones are hollow || A neck joins the head to the trunk. The **tail** is an extension of the spinal column. Their body is covered with hair or fur which keeps them warm || Each species of fish has different fins, but most have dorsal, pelvic, and caudal fins. || They have **four limbs** or legs. Frogs have very strong back legs || They have four limbs or legs. Snakes have no limbs || Birds have **four limbs**, the black limbs are legs and the front limbs are **wings** || **Four limbs.** Terrestrial (legs) Aquatic (fins) Bats (wings) || Their body temperature constant. || The lungs are connected to air sacs which enable them to breathe and to fly. || They **use lungs** to breathe. Aquatic mammals come up to surface to breathe. || Eggs are not incubated. Some snakes are ovoviviparous, the embryo develops inside an egg that remain inside the female until hatching. || Birds **are oviparous**, they lay eggs. The eggs are incubated until the chicks-hatch. Fertilisation takes place internally || Fertilisation takes place internally, and the young grow in the mother´s womb. They are **viviparous,** they give birth to live young. The babies feed on their mother´s milk || Many snakes have fangs connected to glands that produce poison. || The **shape of a bird´s beak** depends on the food it eats. || They feed on different things.
 * **Limbs** || Fish **limbs are called fins**.
 * **Interaction (temperature)** || Fish are **cold-blooded,** they cannot regulate their body temperatura || They are **cold-blooded,** they do not usually live in cold places || They are pokilotherms or cold-blooded. They cannot regulate their body temperature. They are warm or cold depending on the environment. || **Birds are homeothermal or warm-blooded** || **Homeothermal or warm-blooded (endothermal),** they can keep
 * **Respiration** || They use **gills** to obtain oxygen from water. The gills are protected by the operculumm or cover. However, sharks and rays have no operculum || **Adult use their lungs and skin to breathe.** Young frogs, tadpoles, are aquatica and use gills to breathe. || They use lungs to breathe || They **use lungs** to breathe.
 * **Reproduction** || Fish are **oviparous**, and ferlisation takes place externally. However, sharks are ovoviviparous, fertilisation takes place internally || Most amphians are **oviparous,** but salamanders are ovoviviparous. Fertilisation takes place externally in some amphians and internally in others. || They are oviparous. The eggs develop inside a sac filled with liquid, called amnion. Ahard shell protects the eggs and prevent dehydration.
 * **Nutrition** || Most fisf are **carnivores.** || Most are **carnivores,** but at the tadpole stage, they are herbivores. || Most reptiles are carnivores. They have teeth to capture their pray. Turtles have beaks.
 * Carnivores eat meat. Insectivores eat insects. Herbivores eat plants, granivores eat seeds** ||
 * **Grupos y ejemplos** || Cartilaginous fish (Ray, sharks,….)

Bony fish (Carp, troute…., hake, salmon) || Tigre salamander, frogs, newts (Tritón) || Snakes, lizards, turtles, tortoises, crocodilians || Buzzard, águila ratonera Swallowgolondrina Heron, garza Duck Rooster, gallo || Monotremes: platypus Marsupials: kangaroo Placentals, dolphin ||