Beautiful scale clouds were spread across the sky.

The first time I saw a noctilucent cloud, it felt like I was dreaming.

Thin clouds are floating in the sky.

There are altocumulus clouds in the sky.

When the volcano erupted, a glowing cloud covered the sky.

We went to the zoo with our family on the weekend.

Vertebrates are organisms whose part of the skeleton is composed of a spine.

Wild animals are part of nature, and we should protect them.

He is majoring in zoology at university.

She has zoophobia, and runs away as soon as she sees dogs or cats.