'Sacrifice' for science, lab rats are under heavy stress
Currently, more than 120 million lab rats are used worldwide each year. Many of them are used to studying conditions like cancer, arthritis, and chronic pain.The players 'deep play' in the natural world
To escape the enemy, snake Hognose lies on his stomach and stops breathing. Weasel opossumProfessor stays for 20 years to build stone walls
Luan Luan persevered for 20 years to realize his dream of chauvinism and his love of fill.