Mucus provisioning as milk in an amphibian.

The article discusses the diversity of parental care in animals, focusing on the provision of mucus as a form of nourishment for offspring. While maternal care through lactation is common in mammals, there is growing evidence that nonmammal vertebrates, such as fish and amphibians, can also nurture their young with milk-like substances. The study specifically highlights the discovery of mucus provisioning as "milk" in a species of caecilian, a less-studied amphibian. The researchers provide evidence of this behavior and discuss its implications for understanding the evolution of parental care across different animal taxa. [Extracted from the article]