TALIA MOORE: And even though we don’t have an external tail, we still have a lot of those muscles that control the tail. And so I’m learning a lot about those when I go to physical therapy. CERI WEBER ...

A cat’s tail is an extension of its spine. Tails are vertebrae, which are made of blood cells, nerves, muscles, and scent glands. The bones that make up a cat’s tail are known as caudal vertebrae.

In the course of tail regeneration, a cartilaginous tube encapsulates the regenerated spinal nerves and is covered by muscle and skin. Lozito and Tuan found that differentiation at both ends of this ...