Salmon

By Andreu Llamas

Describes the physical characteristics, habitat, behavior, migration, ancestors, and predators of these efficient torpedo-shaped fish.

Kangaroos

By Andreu Llamas

Describes the physical characteristics, habitat, behavior, and life cycle of these large marsupials.

Frogs

By Andreu Llamas

Describes the physical characteristics, habitat, behavior, and life cycle of frogs.

Rays

By Andreu Llamas

Describes the physical characteristics, habitat, behavior, and life cycle of these flat fish, some of which have organs that can produce electricity.

Mussels

By Andreu Llamas

Describes the physical characteristics and habits of mussels and other mollusks.

Sponges

By Andreu Llamas

Examines the different types, habitat, physical characteristics, enemies, and ancestors of sponges.

Fleas

By Andreu Llamas

Describes the physical characteristics, habitat, behavior, and life cycle of these tiny, leaping parasites.

Secrets of the Animal World

By Isidro Sanchez, Eulalia Garcia, Andreu Llamas

Respiration and circulation

By Andreu Llamas

Describes the structures and functions of the respiratory and circulatory systems, including the lungs and airways, blood cells, the heart, arteries, veins, capillaries, pulmonary circulation and t...

Muscles and bones

By Andreu Llamas

Describes the human skeleton, major muscles of the body, the internal composition of bone, and the process of muscular contraction.