The practice of tethering is prevalent there are an estimated 3,500 equines currently being tethered within the UK. Tethering is not illegal; HAPPA does not endorse tethering as a suitable method of keeping horses; there are apparent dangers involved and the equine is at risk of injury. Repeated grazing on the same ground could seriously compromise his welfare. Attacks on tethered horses by dogs and vandals are being reported frequently. A tethered horse is unable to flee and his natural flight instinct is prohibited.