Horses

How horses whinny: Helium tests reveal whistling while singing mechanism

• A horse’s whinny is an unusually distinctive mix of sounds including both high and low frequencies. • Reporting in Current Biology, researchers demonstrate how horses produce hig

Horses with over 30 minutes of REM sleep show better persistence in learning tasks

• Horses with ≥30 minutes REM sleep daily outperform peers in field learning tasks. • Short REM periods reduce perseverance and performance during demanding training. • New field‑a