Call it a mystery with a stubby tail: an odd-looking mouse discovered through a US government breeding program in the 1940s that had a short, kinky tail and an extra set of ribs in its neck — and nobody knew why.
Call it a mystery with a stubby tail: an odd-looking mouse discovered through a US government breeding program in the 1940s that had a short, kinky tail and an extra set of ribs in its neck — and nobody knew why.