He understands the importance of learning.

He is majoring in psychology.

Gaku is my best friend.

He has a deep interest in archaeology.

Mammals can maintain a constant body temperature.

Primates are a group of mammals that include humans.

Crustaceans are a type of marine life, including crabs and shrimps.

Insects are an important part of the natural world.

My grandfather is skilled in raising domestic fowls.

The beauty of butterflies is breathtaking.