Mammals can maintain a constant body temperature.

The mammoth is an extinct large mammal.

This species is on the brink of extinction.

That species is on the verge of extinction.

This large-sized TV fits perfectly in the room.

Lactation deepens the bond between a baby and its mother.

The mother kangaroo is suckling her child.

I saw many animals at the zoo.

Attention is being focused on the trends of large-capital stocks.

Driving a heavy vehicle requires special training.