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Any animal of which the female feeds her young on milk from her own body. Mammals
Animals whose female expels the eggs to the outside when the embryos are undeveloped or in a very primitive stage of development. Oviparous
That it is a cold-blooded vertebrate that spends the first part of its life in water breathing through bronchi and when it reaches adulthood it becomes terrestrial and has lung respiration. Amphibian
Animals that are characterized by their skin, covered with scales or by a protective shell such as turtles, and also by their very particular way of moving: dragging the belly along the surface Reptile
Vertebrate animal whose main characteristics are: warm blood, lung respiration, body covered by feathers, horny beak without teeth and two wings arranged on the side of its body that are normally used for flight. Birds
Aquatic animals that, thanks to having gills, can breathe under water. They are generally oviparous beings Fishes
Group of arthropod invertebrates, that is, they have articulated body and legs. These arthropods have 4 pairs of legs, lack antennae, and yet have claw-like mouthparts to hold food, chelicerae. Arachnid
Invertebrates that are present in all types of habitats and that are characterized by having a vermiform body composed of segments divided by rings Annelids
Soft-bodied invertebrates present in saltwater, freshwater, and terrestrial habitats. They have a muscular foot and a calcareous shell that protects the soft body. Mollusks
These animals have the body covered by an exoskeleton known as the cuticle and formed a linear series of ostensible segments, with appendages of articulated pieces. Arthropods
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