Axolotl neoteny: The secret of the forever young amphibian The axolotl becomes sexually mature while keeping larval features such as external gills and an aquatic lifestyle. Read more
The breathing of the Siamese fighting fish The labyrinth organ allows the Siamese fighting fish to breathe air from the water surface and adapt to low-oxygen waters. Read more
Leopard tortoise size: How big can it grow? The leopard tortoise is one of Africa’s largest land tortoises, with a shell length that can reach up to 70 cm. Read more
