# data[].attributes.body
Characteristics:

Have body covered with scales made of keratin.

Fertilize eggs internally.

Produce eggs with shells and internal membrane structure.

Are cold-blooded and absorb heat from environment (ectothermic).

Examples:
Snake, Turtle ,Lizard

# data[].attributes.body
Characteristics:
The class Mammalia has three unique characteristics: hair, milk production in themammary glands and three bones in the middle ear. Characteristics shared by other classes of animals include a warm-blooded metabolism, four-chambered heart and four limbs. Members of class Mammalia are called mammals.

Examples:
Bat, Rodent, Primate

# data[].attributes.body
Characteristics:
Members of the elasmobranchii subclass have no swim bladders, five to seven pairs of gill clefts opening individually to the exterior, rigid dorsal fins, and small placoid scales.
Examples:
Sharks and rays
Shark, Stringray, Batoids.

# data[].attributes.body
Characteristics:
Aves is a Class in the Subphylum Vertebrata of the Phylum Chordata, so they have all of the characteristics of both of these groups in addition to the following: Waterproof skin covered in feathers. Endothermic, warm blooded. Hard shelled eggs that are waterproof .
Examples:
Known birds
Parrot, Penguin, Stork.

# data[].attributes.body
Characteristics:
The fins are supported by rays, as the name indicates. In contrast to the cartilaginous fish they have a rigid skeleton. The swim bladder is also a unique feature of most ray-finned fish, enabling them to maintain buoyancy as they move up or down in the water.
Examples:
Most known fishes
Teleost, Salmon,Eel.