The rat is about 9-16 centimeters long and has spiny hairs among its brown and black fur. Read more at straitstimes.com.

However, a 2022 study on the Sry-deficient Amami spiny rat suggests that humans might evolve a new male-determining gene, offering hope of survival despite the Y chromosome's decline. A study ...

Two rodent species, the mole voles of Eastern Europe and the spiny rats of Japan, have already lost their Y chromosomes and continue to thrive. In these rodents, the genes that were once on the Y ...