He is majoring in zoology at university.

Arthropods are a large group of animals that include insects, spiders, and shrimp.

This animal is a protected species, so you must never touch it.

I am majoring in biology at university.

Carbohydrates are important as a source of energy.

I prefer cash transactions.

His painting is very good at model drawing.

He has a full-size model of a dinosaur in his room.

Animal experiments are necessary for the advancement of science, but there are also ethical issues.

He is learning about the handling of experimental animals.