Placental mammals have a placenta, an organ that develops during gestation and bridges mother and fetus. The placenta provides nutrients to the fetus to develop in the womb, protecting the baby from ...

People take two to three times as long to heal from wounds as other mammals, a team of biologists reported Tuesday in the journal Proceedings of the Royal Society B. The researchers suggested the ...

Seals give birth only when conditions are right. After mating, a female seal can delay implantation of the embryo in the ...

Zebrafish can regenerate sensory hair cells that humans permanently lose, like those in the inner ear linked to hearing and balance. New research reveals two specific genes that control how different ...

Animal Welfare Series Preface; Contents; About the Authors; Chapter 1: Introduction; 1.1 Wildly Irresponsible or Responsible for the Wild?; 1.2 The Marine Mammals; 1.3 Welfare, Conservation and the ...

No human can survive longer than a few minutes underwater, and even a well-trained Olympic swimmer needs frequent gulps of air. Our brains need a constant supply of oxygen, particularly during ...

A living database reveals why the global count of mammal species keeps changing - and why accurate naming matters for ...

View of a dolphin in the Dolphin Harbor, at the Miami Seaquarium, in Virginia Key, which closed on Oct. 12, 2025, after 70 years in business. Pedro Portal [email protected] For 70 years, ...