TEHRAN (ANA)- Uncovering the secrets behind their immortality could provide valuable insights into aging in mammals, including humans.

TEHRAN (ANA)- The Persian leopard is a leopard subspecies native to Western and Central Asia, mainly in Iran. Since 2016, it has been listed as Endangered on the IUCN Red List, as the wild population is estimated at less than 1000 mature individuals.

TEHRAN (ANA)- Scientists discovered that polar bear fur’s oily coating prevents ice from sticking, thanks to a unique mix of lipids and this natural defense, refined by evolution, could inspire new solutions for de-icing aircraft and wind turbines.

TEHRAN (ANA)- A new study has uncovered the substantial impact of altitude on the gut microbiota of the plateau pika, a small mammal, on the Qinghai-Tibet Plateau in the west of China, helping to reveal the microbial adaptation mechanism of plateau animals.

TEHRAN (ANA)- Iran is the second largest country producing caviar in the world.

TEHRAN (ANA)- Scientists at the Human and Animal Cell Bank of the National Center for Genetic and Biological Resources of Iran have strived to store and maintain tissue, cell, and DNA samples with the aim of protecting valuable animal species.

TEHRAN (ANA)- Scientists have discovered that whales move nutrients thousands of miles -- in their urine -- from as far as Alaska to Hawaii.

TEHRAN (ANA)- The megalodon has long been imagined as an enormous great white shark, but new research suggests that perception is all wrong. The study finds the prehistoric hunter had a much longer body -- closer in shape to a lemon shark or even a large whale.

TEHRAN (ANA)- New research has provided fresh insights into how bird songs evolve over time, revealing a significant role for population dynamics in shaping song diversity and change.

TEHRAN (ANA)- A sweeping study for the first time tallies butterfly data from more than 76,000 surveys across the continental United States which showed butterflies -- all of them -- are disappearing.