Duckbills are a primitive family of egg-laying, semi-aquatic mammals.

Duckbill

Duckbills are a primitive family of egg-laying, semi-aquatic mammals.

Many animals of the monotremata classification.

Monotremata

Many animals of the monotremata classification.

"Ornithorhynchus, commonly called duckbill or watermole, is a small quadruped found in Australia and Tasmania."—(Charles Leonard-Stuart, 1911)

Ornithorhynchus

"Ornithorhynchus, commonly called duckbill or watermole, is a small quadruped found in Australia and…

The platypus is an interesting mammal, which inhabits the rivers and lakes of Australia and Tasmania.

Platypus

The platypus is an interesting mammal, which inhabits the rivers and lakes of Australia and Tasmania.

The Platypus (Ornithorhynchus anatinus) is a semi-aquatic mammal endemic to eastern Australia, including Tasmania.

Platypus

The Platypus (Ornithorhynchus anatinus) is a semi-aquatic mammal endemic to eastern Australia, including…

The platypus is a small, half-aquatic mammal endemic to the eastern part of Australia, and one of the five extant species of monotremes, the only mammals that lay eggs instead of giving birth to live young.

Platypus Skull

The platypus is a small, half-aquatic mammal endemic to the eastern part of Australia, and one of the…