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.

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 ...

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 ...