Meet the rebels of the animal kingdom. While most mammals gave birth to live young millions of years ago, a small group of creatures decided to stick with eggs. These are the monotremes, and they’re ...

IN Semon's Zoologische Forschungsreisen, Lieferung xxii. (1904), Disselhorst treats of “Die maennlichen Geschlechtsorgane der monotremen und einiger Marsupialen.” On p. 123 are two text ...

Echidnas don't have very good vision, but they have a strong sense of smell and hearing. When they feel threatened, echidnas will roll into a ball so that only their spiky back is exposed. Echidnas ...

Discover interesting facts about echidnas, the strange platypus relative with spines, spurs and a pouch.

Echidna. Image via Unsplash Echidnas, also known as spiny anteaters, belong to the family Tachyglossidae and are classified as monotremes—mammals that lay eggs rather than giving birth to live young.

The platypus, a native of eastern Australia, is a puzzling creature with features from birds, mammals, and reptiles. Male ...

A study used single-cell transcriptomics to analyze maternal–fetal interfaces in six mammalian species. The team discovered ...

Mammal evolution to upright posture followed complex branching path rather than simple step-by-step progression.

SOUTH BEND, Ind. -- The Potawatomi Zoo announced it is welcoming a new ambassador animal, Teddy the short-beaked echidna. Zoo officials say Teddy was recently moved to Potawatomi from another ...