In those cases, the side the symptoms appear on may be more or less random. You may notice these on the left side and not the right, but they’re not inherently exclusive to that half.

Cats overwhelmingly choose to sleep on their left side, a habit researchers say could be tied to survival. This sleep position activates the brain’s right hemisphere upon waking, perfect for ...

An international research team that analyzed several hundred YouTube videos of sleeping cats found that they prefer to sleep on their left side. The researchers see this bias as an evolutionary ...

The left atrium is one of the four chambers of the heart, located on the left posterior side. Its primary roles are to act as a holding chamber for blood returning from the lungs and to act as a ...

Left and right brains hear speech differently, yet how this divide forms was unclear − until mouse studies showed each hemisphere runs on its own developmental clock.

Cats prefer to sleep on their left side. This is the conclusion drawn by an international research team that analyzed several hundred YouTube videos of sleeping cats. The researchers see this bias ...