He took a reckless action.

His reckless behavior is confusing the people around him.

Lower the price a bit more, please!

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.

It's fun to see colorful butterflies in the park.